diff --git a/cloudphone/src/main/java/com/huawei/cloudphone/virtualdevice/camera/VirtualCamera.java b/cloudphone/src/main/java/com/huawei/cloudphone/virtualdevice/camera/VirtualCamera.java
index 97112bed11cf89631b5f1961903e5acfe5e0ae88..12993c776b7cf53039e62c656690ec5ca2121218 100644
--- a/cloudphone/src/main/java/com/huawei/cloudphone/virtualdevice/camera/VirtualCamera.java
+++ b/cloudphone/src/main/java/com/huawei/cloudphone/virtualdevice/camera/VirtualCamera.java
@@ -93,7 +93,7 @@ public class VirtualCamera implements Camera.PreviewCallback {
 
     public int startPreview() {
         mCamera = Camera.open(mCameraId);
-        Camera.Parameters param = mCamera.getParameters();
+        Camera.Parameters param = setDefaultParameters(mCamera.getParameters());
         if (mIsUseH264) {
             param.setPreviewFormat(AvcEncoder.getImageFormat());
         } else {
@@ -107,7 +107,6 @@ public class VirtualCamera implements Camera.PreviewCallback {
             param.setPreviewSize(mWidth, mHeight);
         }
 
-        mCamera.setParameters(param);
         List<int[]> mFpsRangeList = new LinkedList<int[]>();
         mFpsRangeList = param.getSupportedPreviewFpsRange();
         for (int[] ele : mFpsRangeList) {
@@ -117,6 +116,7 @@ public class VirtualCamera implements Camera.PreviewCallback {
                 param.setPreviewFrameRate(mFps);
             }
         }
+        mCamera.setParameters(param);
 
         try {
             mSurfaceHolder = ParamBundle.getSurfaceHolder();
@@ -232,6 +232,9 @@ public class VirtualCamera implements Camera.PreviewCallback {
         }
         sb.deleteCharAt(sb.length() - 1);
         param.set("focus-mode-values", sb.toString());
+        if (sb.toString().contains(FOCUS_MODE_CONTINUOUS_PICTURE)) {
+            param.setFocusMode(FOCUS_MODE_CONTINUOUS_PICTURE);
+        }
 
         List<Camera.Size> picSize = param.getSupportedPictureSizes();
         sb = new StringBuilder();