diff --git a/app/src/main/java/com/gh/download/cache/CacheInfo.java b/app/src/main/java/com/gh/download/cache/CacheInfo.java
new file mode 100644
index 0000000000..31d07ab97c
--- /dev/null
+++ b/app/src/main/java/com/gh/download/cache/CacheInfo.java
@@ -0,0 +1,41 @@
+package com.gh.download.cache;
+
+public class CacheInfo {
+    public static final long TOTAL_ERROR = -1;//获取进度失败
+    private String url;
+    private long total;
+    private long progress;
+    private String fileName;
+
+    public CacheInfo(String url) {
+        this.url = url;
+    }
+
+    public String getUrl() {
+        return url;
+    }
+
+    public String getFileName() {
+        return fileName;
+    }
+
+    public void setFileName(String fileName) {
+        this.fileName = fileName;
+    }
+
+    public long getTotal() {
+        return total;
+    }
+
+    public void setTotal(long total) {
+        this.total = total;
+    }
+
+    public long getProgress() {
+        return progress;
+    }
+
+    public void setProgress(long progress) {
+        this.progress = progress;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/gh/download/cache/CacheManager.java b/app/src/main/java/com/gh/download/cache/CacheManager.java
new file mode 100644
index 0000000000..66dcc71fde
--- /dev/null
+++ b/app/src/main/java/com/gh/download/cache/CacheManager.java
@@ -0,0 +1,206 @@
+package com.gh.download.cache;
+
+import com.danikula.videocache.file.FileNameGenerator;
+import com.danikula.videocache.file.Md5FileNameGenerator;
+import com.halo.assistant.HaloApp;
+import com.shuyu.gsyvideoplayer.utils.StorageUtils;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicReference;
+
+import io.reactivex.Observable;
+import io.reactivex.ObservableEmitter;
+import io.reactivex.ObservableOnSubscribe;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.schedulers.Schedulers;
+import okhttp3.Call;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+
+public class CacheManager {
+    private static final AtomicReference<CacheManager> INSTANCE = new AtomicReference<>();
+    private HashMap<String, Call> downCalls;
+    private OkHttpClient mClient;
+    private File cacheDirectory = StorageUtils.getIndividualCacheDirectory(HaloApp.getInstance().getApplication());
+    private FileNameGenerator generator = new Md5FileNameGenerator();
+    private final String TEMP_POSTFIX = ".download";
+    private final int preLength = 5 * 1024 * 1024;//预加载大小
+
+    public static CacheManager getInstance() {
+        for (; ; ) {
+            CacheManager current = INSTANCE.get();
+            if (current != null) {
+                return current;
+            }
+            current = new CacheManager();
+            if (INSTANCE.compareAndSet(null, current)) {
+                return current;
+            }
+        }
+    }
+
+    private CacheManager() {
+        downCalls = new HashMap<>();
+        mClient = new OkHttpClient.Builder().build();
+    }
+
+    public void download(String url, CacheObserver cacheObserver) {
+        //当前url已下载完成则不再下载
+        for (File file : getAllFile()) {
+            if (file.getName().equals(generator.generate(url))) {
+                return;
+            }
+        }
+        Observable.just(url)
+                .filter(s -> !downCalls.containsKey(s))//call的map已经有了,就证明正在下载,则这次不下载
+                .flatMap(s -> Observable.just(createDownInfo(s)))
+                .map(this::getRealFileName)
+                .flatMap(cacheInfo -> Observable.create(new DownloadSubscribe(cacheInfo)))
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribeOn(Schedulers.io())
+                .subscribe(cacheObserver);
+
+    }
+
+    public void cancel(String url) {
+        Call call = downCalls.get(url);
+        if (call != null) {
+            call.cancel();
+        }
+        downCalls.remove(url);
+    }
+
+    /**
+     * 创建DownInfo
+     *
+     * @param url 请求网址
+     * @return DownInfo
+     */
+    private CacheInfo createDownInfo(String url) {
+        CacheInfo cacheInfo = new CacheInfo(url);
+        long contentLength = getContentLength(url);//获得文件大小
+        cacheInfo.setTotal(contentLength);
+        String fileName = generator.generate(url) + TEMP_POSTFIX;
+        cacheInfo.setFileName(fileName);
+        return cacheInfo;
+    }
+
+    private CacheInfo getRealFileName(CacheInfo cacheInfo) {
+        String fileName = cacheInfo.getFileName();
+        long downloadLength = 0;
+        if (!cacheDirectory.exists()) {
+            cacheDirectory.mkdir();
+        }
+        File file = new File(cacheDirectory, fileName);
+        if (file.exists()) {
+            //找到了文件,代表已经下载过,则获取其长度
+            downloadLength = file.length();
+        }
+        //设置改变过的文件名/大小
+        cacheInfo.setProgress(downloadLength);
+        cacheInfo.setFileName(file.getName());
+        return cacheInfo;
+    }
+
+
+    private class DownloadSubscribe implements ObservableOnSubscribe<CacheInfo> {
+        private CacheInfo cacheInfo;
+
+        public DownloadSubscribe(CacheInfo cacheInfo) {
+            this.cacheInfo = cacheInfo;
+        }
+
+        @Override
+        public void subscribe(ObservableEmitter<CacheInfo> e) throws Exception {
+            String url = cacheInfo.getUrl();
+            long downloadLength = cacheInfo.getProgress();//已经下载好的长度
+            long contentLength = cacheInfo.getTotal();//文件的总长度
+            if (downloadLength >= preLength) {
+                e.onComplete();
+                return;
+            }
+            e.onNext(cacheInfo);
+            Request request = new Request.Builder()
+                    .addHeader("RANGE", "bytes=" + downloadLength + "-" + (contentLength > preLength ? preLength : contentLength))
+                    .url(url)
+                    .build();
+            Call call = mClient.newCall(request);
+            downCalls.put(url, call);
+            Response response = call.execute();
+            File file = new File(cacheDirectory, cacheInfo.getFileName());
+            InputStream is = null;
+            FileOutputStream fileOutputStream = null;
+            try {
+                is = response.body().byteStream();
+                fileOutputStream = new FileOutputStream(file, true);
+                byte[] buffer = new byte[2048];
+                int len;
+                while ((len = is.read(buffer)) != -1) {
+                    fileOutputStream.write(buffer, 0, len);
+                    downloadLength += len;
+                    cacheInfo.setProgress(downloadLength);
+                    e.onNext(cacheInfo);
+                }
+                fileOutputStream.flush();
+                downCalls.remove(url);
+            } finally {
+                if (is != null) {
+                    is.close();
+                }
+                if (fileOutputStream != null) {
+                    fileOutputStream.close();
+                }
+            }
+            if (file.length() == contentLength){
+                file.renameTo(new File(file.getPath().substring(0,file.getPath().lastIndexOf(TEMP_POSTFIX))));
+            }
+            e.onComplete();
+        }
+    }
+
+    /**
+     * 获取下载长度
+     *
+     * @param downloadUrl
+     * @return
+     */
+    private long getContentLength(String downloadUrl) {
+        Request request = new Request.Builder()
+                .url(downloadUrl)
+                .build();
+        try {
+            Response response = mClient.newCall(request).execute();
+            if (response != null && response.isSuccessful()) {
+                long contentLength = response.body().contentLength();
+                response.close();
+                return contentLength == 0 ? CacheInfo.TOTAL_ERROR : contentLength;
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return CacheInfo.TOTAL_ERROR;
+    }
+
+    public void removeAllCall() {
+        for (String key : downCalls.keySet()) {
+            cancel(key);
+        }
+    }
+
+    private List<File> getAllFile() {
+        if (cacheDirectory.exists()) {
+            File[] files = cacheDirectory.listFiles();
+            return Arrays.asList(files);
+        }
+        return new ArrayList<>();
+    }
+
+}
diff --git a/app/src/main/java/com/gh/download/cache/CacheObserver.java b/app/src/main/java/com/gh/download/cache/CacheObserver.java
new file mode 100644
index 0000000000..357068d2f9
--- /dev/null
+++ b/app/src/main/java/com/gh/download/cache/CacheObserver.java
@@ -0,0 +1,32 @@
+package com.gh.download.cache;
+
+import com.lightgame.utils.Utils;
+
+import io.reactivex.Observer;
+import io.reactivex.disposables.Disposable;
+
+public abstract class CacheObserver implements Observer<CacheInfo> {
+    protected Disposable d;//可以用于取消注册的监听者
+    protected CacheInfo cacheInfo;
+
+    @Override
+    public void onSubscribe(Disposable d) {
+        this.d = d;
+    }
+
+    @Override
+    public void onNext(CacheInfo cacheInfo) {
+        this.cacheInfo = cacheInfo;
+        Utils.log(cacheInfo.getProgress() + "-" + cacheInfo.getTotal());
+    }
+
+    @Override
+    public void onError(Throwable e) {
+        e.printStackTrace();
+    }
+
+    @Override
+    public void onComplete() {
+
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/gh/gamecenter/video/detail/DetailPlayerView.kt b/app/src/main/java/com/gh/gamecenter/video/detail/DetailPlayerView.kt
index e3a68c7ed2..70200e025a 100644
--- a/app/src/main/java/com/gh/gamecenter/video/detail/DetailPlayerView.kt
+++ b/app/src/main/java/com/gh/gamecenter/video/detail/DetailPlayerView.kt
@@ -7,6 +7,7 @@ import android.util.AttributeSet
 import android.view.Surface
 import android.view.View
 import android.widget.ImageView
+import android.widget.SeekBar
 import androidx.core.content.ContextCompat
 import com.gh.common.constant.Constants
 import com.gh.common.util.*
@@ -42,6 +43,7 @@ class DetailPlayerView @JvmOverloads constructor(context: Context, attrs: Attrib
     private var mDuration = 0
     private var mRetry = false
     var isBottomContainerShow = false
+    private var byStartedClick = false //第一次进入不显示mBottomContainer
 
     override fun init(context: Context) {
         super.init(context)
@@ -245,6 +247,13 @@ class DetailPlayerView @JvmOverloads constructor(context: Context, attrs: Attrib
 
     /********************************各类UI的状态显示*********************************************/
 
+    override fun startAfterPrepared() {
+        super.startAfterPrepared()
+        setViewShowState(mStartButton, View.INVISIBLE)
+        setViewShowState(mBottomProgressBar, View.VISIBLE)
+        setViewShowState(mBottomContainer, View.GONE)
+    }
+
     override fun hideAllWidget() {
         super.hideAllWidget()
         setViewShowState(mBottomProgressBar, View.VISIBLE)
@@ -253,6 +262,7 @@ class DetailPlayerView @JvmOverloads constructor(context: Context, attrs: Attrib
 
     override fun changeUiToNormal() {
         super.changeUiToNormal()
+        byStartedClick = false
         setViewShowState(mStartButton, View.INVISIBLE)
         setViewShowState(mBottomProgressBar, View.VISIBLE)
         setViewShowState(mBottomContainer, View.GONE)
@@ -269,8 +279,14 @@ class DetailPlayerView @JvmOverloads constructor(context: Context, attrs: Attrib
 
     override fun changeUiToPlayingShow() {
         super.changeUiToPlayingShow()
-        setViewShowState(mBottomProgressBar, if (isBottomContainerShow) View.GONE else View.VISIBLE)
-        setViewShowState(mBottomContainer, if (isBottomContainerShow) View.VISIBLE else View.GONE)
+        if (!byStartedClick) {
+            setViewShowState(mStartButton, View.INVISIBLE)
+            setViewShowState(mBottomContainer, View.GONE)
+            setViewShowState(mBottomProgressBar, View.VISIBLE)
+        } else {
+            setViewShowState(mBottomContainer, if (isBottomContainerShow) View.VISIBLE else View.GONE)
+            setViewShowState(mBottomProgressBar, if (isBottomContainerShow) View.GONE else View.VISIBLE)
+        }
         errorContainer.visibility = View.GONE
     }
 
@@ -284,8 +300,13 @@ class DetailPlayerView @JvmOverloads constructor(context: Context, attrs: Attrib
 
     override fun changeUiToPlayingBufferingShow() {
         super.changeUiToPlayingBufferingShow()
-        setViewShowState(mBottomProgressBar, View.GONE)
-        setViewShowState(mBottomContainer, if (isBottomContainerShow) View.VISIBLE else View.GONE)
+        if (!byStartedClick) {
+            setViewShowState(mBottomProgressBar, View.VISIBLE)
+            setViewShowState(mBottomContainer, View.GONE)
+        } else {
+            setViewShowState(mBottomProgressBar, View.GONE)
+            setViewShowState(mBottomContainer, View.VISIBLE)
+        }
     }
 
     override fun changeUiToCompleteShow() {
@@ -336,6 +357,7 @@ class DetailPlayerView @JvmOverloads constructor(context: Context, attrs: Attrib
     }
 
     override fun onClickUiToggle() {
+        byStartedClick = true
         //处理小于30s视频点击空白不能隐藏控件
         if (mCurrentState == GSYVideoView.CURRENT_STATE_PLAYING) {
             if (mStartButton != null) {
@@ -357,6 +379,11 @@ class DetailPlayerView @JvmOverloads constructor(context: Context, attrs: Attrib
             }
     }
 
+    override fun onStartTrackingTouch(seekBar: SeekBar?) {
+        super.onStartTrackingTouch(seekBar)
+        byStartedClick = true
+    }
+
     override fun getEnlargeImageRes(): Int {
         return R.drawable.ic_game_detail_enter_full_screen
     }
diff --git a/app/src/main/java/com/gh/gamecenter/video/detail/VideoAdapter.kt b/app/src/main/java/com/gh/gamecenter/video/detail/VideoAdapter.kt
index 4e09f278cf..9ae85f7a16 100644
--- a/app/src/main/java/com/gh/gamecenter/video/detail/VideoAdapter.kt
+++ b/app/src/main/java/com/gh/gamecenter/video/detail/VideoAdapter.kt
@@ -5,6 +5,8 @@ import android.content.Context
 import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
 import com.gh.common.constant.Constants
+import com.gh.download.cache.CacheManager
+import com.gh.download.cache.CacheObserver
 import com.gh.gamecenter.entity.VideoEntity
 import com.halo.assistant.HaloApp
 import com.shuyu.gsyvideoplayer.builder.GSYVideoOptionBuilder
@@ -72,6 +74,12 @@ class VideoAdapter(val mContext: Context, val mViewModel: VideoDetailContainerVi
         videoView.isNeedShowWifiTip = HaloApp.get(Constants.SHOULD_SHOW_VIDEO_MOBILE_WARNING, false) as Boolean?
                 ?: false
         if (position == mViewModel.startPosition) {
+            if (position + 2 <= videoList.size - 1) {
+                CacheManager.getInstance().download(videoList[position + 1].url, object : CacheObserver() {})
+                CacheManager.getInstance().download(videoList[position + 2].url, object : CacheObserver() {})
+            } else if (position + 1 <= videoList.size - 1) {//预加载视频
+                CacheManager.getInstance().download(videoList[position + 1].url, object : CacheObserver() {})
+            }
             videoView.startButton.performClick()
             mViewModel.addHistoryRecord(videoList[position])
         }
diff --git a/app/src/main/java/com/gh/gamecenter/video/detail/VideoDetailContainerFragment.kt b/app/src/main/java/com/gh/gamecenter/video/detail/VideoDetailContainerFragment.kt
index d89c748c1b..85f23c44a7 100644
--- a/app/src/main/java/com/gh/gamecenter/video/detail/VideoDetailContainerFragment.kt
+++ b/app/src/main/java/com/gh/gamecenter/video/detail/VideoDetailContainerFragment.kt
@@ -14,6 +14,8 @@ import com.gh.common.util.*
 import com.gh.common.view.vertical_recycler.OnPagerListener
 import com.gh.common.view.vertical_recycler.PagerLayoutManager
 import com.gh.download.DownloadManager
+import com.gh.download.cache.CacheManager
+import com.gh.download.cache.CacheObserver
 import com.gh.gamecenter.R
 import com.gh.gamecenter.entity.VideoEntity
 import com.gh.gamecenter.manager.UserManager
@@ -145,10 +147,17 @@ class VideoDetailContainerFragment : NormalFragment(), OnBackPressedListener {
                 val pos = mViewPagerLayoutManager.findFirstCompletelyVisibleItemPosition()
 
                 val videoView = findFirstCompletelyVisibleVideoViewByPosition()
+                if (pos + 2 <= mAdapter.videoList.size - 1) {
+                    CacheManager.getInstance().download(mAdapter.videoList[pos + 1].url, object : CacheObserver() {})
+                    CacheManager.getInstance().download(mAdapter.videoList[pos + 2].url, object : CacheObserver() {})
+                } else if (pos + 1 <= mAdapter.videoList.size - 1) {//预加载视频
+                    CacheManager.getInstance().download(mAdapter.videoList[pos + 1].url, object : CacheObserver() {})
+                }
                 if (videoView?.isInPlayingState != true) {
+                    CacheManager.getInstance().cancel(mAdapter.videoList[pos].url)
                     videoView?.startPlayLogic()
                     mBaseHandler.postDelayed({
-                        videoView?.updateMuteStatus()
+                        videoView?.startPlayLogic()
                     }, 500)
                 }
                 mViewModel.addHistoryRecord(mAdapter.videoList[pos])
@@ -201,11 +210,20 @@ class VideoDetailContainerFragment : NormalFragment(), OnBackPressedListener {
     override fun onResume() {
         super.onResume()
         DownloadManager.getInstance(requireContext()).addObserver(dataWatcher)
+        CustomManager.onResumeAll()
     }
 
     override fun onPause() {
         super.onPause()
         DownloadManager.getInstance(requireContext()).removeObserver(dataWatcher)
+        CustomManager.onPauseAll()
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        val uuid = (context as VideoDetailActivity).uuid
+        CustomManager.releaseAllVideos("detail_$uuid")
+        CacheManager.getInstance().removeAllCall()
     }
 
     private fun findFirstCompletelyVisibleVideoViewByPosition(): DetailPlayerView? {