diff --git a/QiniuSDK/Storage/QNFormUpload.m b/QiniuSDK/Storage/QNFormUpload.m
index 173b9356..bd81ab80 100644
--- a/QiniuSDK/Storage/QNFormUpload.m
+++ b/QiniuSDK/Storage/QNFormUpload.m
@@ -26,6 +26,7 @@ @interface QNFormUpload ()
 @property (nonatomic, strong) QNUploadOption *option;
 @property (nonatomic, strong) QNUpCompletionHandler complete;
 @property (nonatomic, strong) QNConfiguration *config;
+@property (nonatomic) float previousPercent;
 
 @end
 
@@ -46,6 +47,7 @@ - (instancetype)initWithData:(NSData *)data
         _complete = block;
         _httpManager = http;
         _config = config;
+        _previousPercent = 0;
     }
     return self;
 }
@@ -72,6 +74,11 @@ - (void)put {
         if (percent > 0.95) {
             percent = 0.95;
         }
+        if (percent > _previousPercent) {
+            _previousPercent = percent;
+        } else {
+            percent = _previousPercent;
+        }
         _option.progressHandler(_key, percent);
     };
 
diff --git a/QiniuSDK/Storage/QNResumeUpload.m b/QiniuSDK/Storage/QNResumeUpload.m
index 110b5871..47d408ef 100644
--- a/QiniuSDK/Storage/QNResumeUpload.m
+++ b/QiniuSDK/Storage/QNResumeUpload.m
@@ -42,6 +42,8 @@ @interface QNResumeUpload ()
 
 @property (nonatomic, strong) NSArray *fileAry;
 
+@property (nonatomic) float previousPercent;
+
 - (void)makeBlock:(NSString *)uphost
            offset:(UInt32)offset
         blockSize:(UInt32)blockSize
@@ -89,6 +91,7 @@ - (instancetype)initWithFile:(id<QNFileDelegate>)file
         _config = config;
 
         _token = token;
+        _previousPercent = 0;
     }
     return self;
 }
@@ -197,6 +200,11 @@ - (void)nextTask:(UInt32)offset retriedTimes:(int)retried host:(NSString *)host
         if (percent > 0.95) {
             percent = 0.95;
         }
+        if (percent > _previousPercent) {
+            _previousPercent = percent;
+        } else {
+            percent = _previousPercent;
+        }
         self.option.progressHandler(self.key, percent);
     };