diff --git a/src/main/java/com/qiniu/storage/ResumeUploader.java b/src/main/java/com/qiniu/storage/ResumeUploader.java
index b3d398f23..6cded46ce 100644
--- a/src/main/java/com/qiniu/storage/ResumeUploader.java
+++ b/src/main/java/com/qiniu/storage/ResumeUploader.java
@@ -6,6 +6,7 @@
 import com.qiniu.http.Client;
 import com.qiniu.http.Response;
 import com.qiniu.storage.model.ResumeBlockInfo;
+import com.qiniu.util.Crc32;
 import com.qiniu.util.StringMap;
 import com.qiniu.util.StringUtils;
 import com.qiniu.util.UrlSafeBase64;
@@ -45,6 +46,7 @@ public final class ResumeUploader {
     private final RecordHelper helper;
     private FileInputStream file;
     private String host;
+    private int retryMax;
 
     ResumeUploader(Client client, String upToken, String key, File file,
                    StringMap params, String mime, Recorder recorder, Configuration configuration) {
@@ -62,6 +64,7 @@ public final class ResumeUploader {
         this.recorder = recorder;
         this.modifyTime = f.lastModified();
         helper = new RecordHelper();
+        retryMax = configuration.retryMax;
     }
 
     public Response upload() throws QiniuException {
@@ -91,8 +94,9 @@ public Response upload() throws QiniuException {
                 throw new QiniuException(e);
             }
 
-//            long crc = Crc32.bytes(blockBuffer, 0, blockSize);
+            long crc = Crc32.bytes(blockBuffer, 0, blockSize);
             Response response = null;
+            QiniuException temp = null;
             try {
                 response = makeBlock(blockBuffer, blockSize);
             } catch (QiniuException e) {
@@ -101,25 +105,38 @@ public Response upload() throws QiniuException {
                 }
                 if (e.response == null || e.response.needRetry()) {
                     retry = true;
+                    temp = e;
                 } else {
                     close();
                     throw e;
                 }
             }
+
+            if (!retry) {
+                ResumeBlockInfo blockInfo0 = response.jsonToObject(ResumeBlockInfo.class);
+                if (blockInfo0.crc32 != crc) {
+                    retry = true;
+                    temp = new QiniuException(new Exception("block's crc32 is not match"));
+                }
+            }
+
             if (retry) {
-                try {
-                    response = makeBlock(blockBuffer, blockSize);
-                    retry = false;
-                } catch (QiniuException e) {
+                if (retryMax > 0) {
+                    retryMax--;
+                    try {
+                        response = makeBlock(blockBuffer, blockSize);
+                        retry = false;
+                    } catch (QiniuException e) {
+                        close();
+                        throw e;
+                    }
+                } else {
                     close();
-                    throw e;
+                    throw temp;
                 }
-
             }
-            ResumeBlockInfo blockInfo = response.jsonToObject(ResumeBlockInfo.class);
-            //TODO check return crc32
-            // if blockInfo.crc32 != crc{}
 
+            ResumeBlockInfo blockInfo = response.jsonToObject(ResumeBlockInfo.class);
             contexts[contextIndex++] = blockInfo.ctx;
             uploaded += blockSize;
             helper.record(uploaded);
@@ -147,7 +164,7 @@ private Response makeBlock(byte[] block, int blockSize) throws QiniuException {
     private void close() {
         try {
             file.close();
-        } catch (IOException e) {
+        } catch (Exception e) {
             e.printStackTrace();
         }
     }
diff --git a/src/main/java/com/qiniu/storage/StreamUploader.java b/src/main/java/com/qiniu/storage/StreamUploader.java
index c600b63a0..0306c407a 100644
--- a/src/main/java/com/qiniu/storage/StreamUploader.java
+++ b/src/main/java/com/qiniu/storage/StreamUploader.java
@@ -5,6 +5,7 @@
 import com.qiniu.http.Client;
 import com.qiniu.http.Response;
 import com.qiniu.storage.model.ResumeBlockInfo;
+import com.qiniu.util.Crc32;
 import com.qiniu.util.StringMap;
 import com.qiniu.util.StringUtils;
 import com.qiniu.util.UrlSafeBase64;
@@ -28,6 +29,7 @@ public final class StreamUploader {
     private final InputStream stream;
     private long size;
     private String host;
+    private int retryMax;
 
     StreamUploader(Client client, String upToken, String key, InputStream stream,
                    StringMap params, String mime, Configuration configuration) {
@@ -40,6 +42,7 @@ public final class StreamUploader {
         this.contexts = new ArrayList<>();
         this.blockBuffer = new byte[Constants.BLOCK_SIZE];
         this.stream = stream;
+        retryMax = configuration.retryMax;
     }
 
     public Response upload() throws QiniuException {
@@ -54,9 +57,11 @@ public Response upload() throws QiniuException {
 
         while (size == 0) {
             int bufferIndex = 0;
+            int blockSize = 0;
             while (ret != -1 && bufferIndex != blockBuffer.length) {
                 try {
-                    ret = stream.read(blockBuffer, bufferIndex, blockBuffer.length - bufferIndex);
+                    blockSize = blockBuffer.length - bufferIndex;
+                    ret = stream.read(blockBuffer, bufferIndex, blockSize);
                 } catch (IOException e) {
                     close();
                     throw new QiniuException(e);
@@ -75,7 +80,9 @@ public Response upload() throws QiniuException {
                 }
             }
 
+            long crc = Crc32.bytes(blockBuffer, 0, blockSize);
             Response response = null;
+            QiniuException temp = null;
             try {
                 response = makeBlock(blockBuffer, bufferIndex);
             } catch (QiniuException e) {
@@ -84,24 +91,34 @@ public Response upload() throws QiniuException {
                 }
                 if (e.response == null || e.response.needRetry()) {
                     retry = true;
+                    temp = e;
                 } else {
                     close();
                     throw e;
                 }
             }
+            if (!retry) {
+                ResumeBlockInfo blockInfo0 = response.jsonToObject(ResumeBlockInfo.class);
+                if (blockInfo0.crc32 != crc) {
+                    retry = true;
+                    temp = new QiniuException(new Exception("block's crc32 is not match"));
+                }
+            }
             if (retry) {
-                try {
-                    response = makeBlock(blockBuffer, bufferIndex);
-                    retry = false;
-                } catch (QiniuException e) {
-                    close();
-                    throw e;
+                if (retryMax > 0) {
+                    retryMax--;
+                    try {
+                        response = makeBlock(blockBuffer, bufferIndex);
+                        retry = false;
+                    } catch (QiniuException e) {
+                        close();
+                        throw e;
+                    }
+                } else {
+                    throw temp;
                 }
-
             }
             ResumeBlockInfo blockInfo = response.jsonToObject(ResumeBlockInfo.class);
-            //TODO check return crc32
-            // if blockInfo.crc32 != crc{}
             contexts.add(blockInfo.ctx);
             uploaded += bufferIndex;
         }
@@ -126,7 +143,7 @@ private Response makeBlock(byte[] block, int blockSize) throws QiniuException {
     private void close() {
         try {
             stream.close();
-        } catch (IOException e) {
+        } catch (Exception e) {
             e.printStackTrace();
         }
     }
diff --git a/src/test/java/com/qiniu/streaming/StreamingTest.java b/src/test/java/com/qiniu/streaming/StreamingTest.java
index 93596d8de..968aa568b 100644
--- a/src/test/java/com/qiniu/streaming/StreamingTest.java
+++ b/src/test/java/com/qiniu/streaming/StreamingTest.java
@@ -12,10 +12,19 @@
 import static org.junit.Assert.*;
 
 /**
- * Created by bailong on 16/9/22.
+ * Created by bailong on 16/9/22
  */
 public class StreamingTest {
-    private Auth auth = TestConfig.testAuth;
+    private Auth auth = null;
+
+    {
+        try {
+            auth = Auth.create(System.getenv("ak"), System.getenv("sk"));
+        } catch (Exception e) {
+            auth = TestConfig.testAuth;
+        }
+    }
+
     private String hub = "pilisdktest";
     private String streamKeyPrefix = "pilijava" + System.currentTimeMillis();
     private StreamingManager manager = new StreamingManager(auth, hub);