diff --git a/models/aliyun_ftasr_api_zh/SBI b/models/aliyun_ftasr_api_zh/SBI
index 0bdb982..cf6f19d 100755
--- a/models/aliyun_ftasr_api_zh/SBI
+++ b/models/aliyun_ftasr_api_zh/SBI
@@ -8,7 +8,9 @@ fi
 scp=$1
 dir=$2
 oss_scp=${dir}/wav_oss.scp
+oss_loss_scp=${dir}/wav_oss_loss.scp
 part_nums=10
+loss_base_nums=10
 test_time=$(date +"%Y-%m-%d-%H-%M-%S")
 echo "Test starts at "${test_time}
 
@@ -16,8 +18,8 @@ echo "Test starts at "${test_time}
 # 可通过命令(wget https://gosspublic.alicdn.com/ossutil/1.7.13/ossutil64) 获取相同版本ossutil64(版本1.7.13) 进行md5sum一致性比较
 # compare ossutil64 md5sum
 md5sum ossutil64 > ${dir}/ossutil64.md5.compare
-diff -r ${dir}/ossutil64.md5.compare ./ossutil64.md5.txt
-if [ $? -ne 0 ];then
+diff -r ${dir}/ossutil64.md5.compare ./ossutil64.md5.txt > ${dir}/ossutil64.md5.compare.diff
+if [ -s ${dir}/ossutil64.md5.compare.diff ];then
   echo "md5sum of ossutil64 is different! Exit!"
   exit 1
 else
@@ -26,7 +28,17 @@ fi
 
 
 # upload wav to oss
-./upload_wav.py ${scp} ${oss_scp} ${dir} ${test_time}
+./upload_wav.py ${scp} ${dir} speechiotest-${test_time}
+
+# check oss wav
+./check_wav.py speechiotest-${test_time} ${scp} ${oss_loss_scp} ${oss_scp}
+loss_wav_num=$(cat $oss_loss_scp | wc -l)
+if [ ${loss_wav_num} -gt ${loss_base_nums} ];then
+  echo "Not found some audio in oss bucket! Please check" ${oss_loss_scp}
+  exit 1
+else
+  echo "Upload audio successfully. Continue..."
+fi
 
 # split test set 
 awk -vf=${part_nums} -vl="`wc -l $oss_scp`" 'BEGIN{p=int(l/f);q=(l%f);for(n=1;n<=f;n++)a[n]=n*p+((n<=q)?++x:x)}{if(NR>a[i])i++;print > "'$oss_scp'."i}' $oss_scp
@@ -44,4 +56,4 @@ rm -rf ${dir}/raw_rec.txt.*
 rm -rf ${oss_scp}.*
 
 # delete oss bucket
-./del_oss_bucket.py ${dir} ${test_time}
+./del_oss_bucket.py ${dir} speechiotest-${test_time}
diff --git a/models/aliyun_ftasr_api_zh/check_wav.py b/models/aliyun_ftasr_api_zh/check_wav.py
new file mode 100755
index 0000000..e974208
--- /dev/null
+++ b/models/aliyun_ftasr_api_zh/check_wav.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+'''
+录音文件识别 接口说明
+https://help.aliyun.com/document_detail/90727.html
+通过ossutil命令获取文件URL
+egs: 为目标存储空间examplebucket下的文件exampleobject.png生成文件URL，并指定超时时间为3600秒。
+     ./ossutil64 sign oss://examplebucket/exampleobject.png --timeout 3600
+'''
+import sys
+import os
+import time
+import codecs
+import oss2
+
+
+access_key_id = ""
+with open('ACCESS_KEY_ID', 'r') as f:
+    access_key_id = f.readline().strip()
+
+access_key_secret = ""
+with open('ACCESS_KEY_SECRET', 'r') as f:
+    access_key_secret = f.readline().strip()
+
+def retry_upload(wavId, wavPath, ossPath, times=10):
+    upload_command = "./ossutil64 cp {wav} {osspath} -e oss-cn-hangzhou.aliyuncs.com -i {access_key_id} -k {access_key_secret}".format(wav=wavPath, osspath=ossPath, access_key_id=access_key_id, access_key_secret=access_key_secret)
+    upload_res = os.popen(upload_command)
+    for r in upload_res:
+        print(wavId + "\t" + r.strip())
+    re_exist = ossbucket.object_exists('wav/{wavId}.wav'.format(wavId=wavId))
+    retry_flag = False
+    if re_exist:
+        print('{wavId} {wavPath} object exist, retry {time} times successfully.'.format(wavId=wavId, wavPath=wavPath, time=10-times))
+        sign_command = "./ossutil64 sign {osspath}{idx}.wav --timeout {times} -e oss-cn-hangzhou.aliyuncs.com -i {access_key_id} -k {access_key_secret}".format(osspath=ossPath, idx=wavId, times=32400, access_key_id=access_key_id, access_key_secret=access_key_secret)
+        res = os.popen(sign_command)
+        for audio in res:
+            wavOssFile.write(wavId + "\t" + audio)
+            break
+        retry_flag = True
+        return retry_flag
+    elif times > 0:
+        time.sleep(5)
+        print('{wavId} {wavPath} object not exist, will retry upload {time} times.'.format(wavId=wavId, wavPath=wavPath, time=times))
+        retry_flag = retry_upload(wavId, wavPath, ossPath, times=times-1)
+    return retry_flag
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 5:
+        sys.stderr.write("check_wav.py <bucket_name> <wav_scp> <wav_loss_scp> <oss_out_scp>\n")
+        exit(-1)
+
+    bucketName = sys.argv[1] 
+    wavFile = codecs.open(sys.argv[2], 'r',  'utf8')
+    wavLossFile = codecs.open(sys.argv[3], 'w+', 'utf8')
+    wavOssFile = codecs.open(sys.argv[4], 'w+', 'utf8')
+
+    auth = oss2.Auth(access_key_id, access_key_secret)
+    ossbucket = oss2.Bucket(auth, 'https://oss-cn-hangzhou.aliyuncs.com', bucketName)
+
+    bucket = "oss://{bucketName}".format(bucketName=bucketName)
+    ossPath = bucket + "/wav/" 
+    for meta in wavFile:
+        wavmeta = meta.split()
+        wavId = wavmeta[0]
+        wavPath = wavmeta[1]
+        
+        exist = ossbucket.object_exists('wav/{wavId}.wav'.format(wavId=wavId))
+        if exist:
+            print('{wavId} {wavPath} object exist'.format(wavId=wavId, wavPath=wavPath))
+            # 生成签名URL
+            sign_command = "./ossutil64 sign {osspath}{idx}.wav --timeout {times} -e oss-cn-hangzhou.aliyuncs.com -i {access_key_id} -k {access_key_secret}".format(osspath=ossPath, idx=wavId, times=32400, access_key_id=access_key_id, access_key_secret=access_key_secret)
+            res = os.popen(sign_command)
+            for audio in res:
+                wavOssFile.write(wavId + "\t" + audio)
+                break
+        else:
+            print('{wavId} {wavPath} object not exist'.format(wavId=wavId, wavPath=wavPath))
+            retry_flag = retry_upload(wavId, wavPath, ossPath, times=10)
+            if not retry_flag:
+                wavLossFile.write(meta)
+                wavLossFile.flush()
+  
+    wavFile.close()      
+    wavLossFile.close()
diff --git a/models/aliyun_ftasr_api_zh/del_oss_bucket.py b/models/aliyun_ftasr_api_zh/del_oss_bucket.py
index 5eb93b7..1320149 100755
--- a/models/aliyun_ftasr_api_zh/del_oss_bucket.py
+++ b/models/aliyun_ftasr_api_zh/del_oss_bucket.py
@@ -15,12 +15,15 @@
 
 if __name__ == "__main__":
     if len(sys.argv) != 3:
-        sys.stderr.write("del_oss_bucket.py <dir> <test_time>\n")
+        sys.stderr.write("del_oss_bucket.py <dir> <bucket_name>\n")
         exit(-1)
     print("decoding finish")
     oss_config_path = sys.argv[1]
-    test_time = sys.argv[2]
+    bucketName = sys.argv[2]
 
-    bucket = "oss://speechiotest-{test_time}".format(test_time=test_time)
+    bucket = "oss://{bucketName}".format(bucketName=bucketName)
     del_command = "./ossutil64 rm {bucket} -b -a -r -f -e oss-cn-hangzhou.aliyuncs.com -i {access_key_id} -k {access_key_secret}".format(bucket=bucket, access_key_id=access_key_id, access_key_secret=access_key_secret)
     del_res = os.popen(del_command)
+    for u in del_res:
+        print(u)
+    time.sleep(20)
diff --git a/models/aliyun_ftasr_api_zh/docker/Dockerfile b/models/aliyun_ftasr_api_zh/docker/Dockerfile
index 01593f2..900a158 100644
--- a/models/aliyun_ftasr_api_zh/docker/Dockerfile
+++ b/models/aliyun_ftasr_api_zh/docker/Dockerfile
@@ -7,7 +7,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
         python3-pip && \
     rm -rf /var/lib/apt/lists/*
 
-RUN pip3 install aliyun-python-sdk-core==2.13.3
+RUN pip3 install oss2 aliyun-python-sdk-core==2.13.3
 
 # Use C.UTF-8 locale to avoid issues with ASCII encoding
 ENV LC_ALL=C.UTF-8
diff --git a/models/aliyun_ftasr_api_zh/upload_wav.py b/models/aliyun_ftasr_api_zh/upload_wav.py
index 28f876c..95b4f42 100755
--- a/models/aliyun_ftasr_api_zh/upload_wav.py
+++ b/models/aliyun_ftasr_api_zh/upload_wav.py
@@ -21,17 +21,17 @@
     access_key_secret = f.readline().strip()
 
 if __name__ == "__main__":
-    if len(sys.argv) != 5:
-        sys.stderr.write("upload_wav.py <wav_scp> <oss_out_scp> <dir> <test_time>\n")
+    if len(sys.argv) != 4:
+        sys.stderr.write("upload_wav.py <wav_scp> <dir> <bucket_name>\n")
         exit(-1)
 
     wavDict = {}
     wavFile = codecs.open(sys.argv[1], 'r',  'utf8') 
-    oss_config_path = sys.argv[3]
-    test_time = sys.argv[4]
+    oss_config_path = sys.argv[2]
+    bucketName = sys.argv[3]
 
     # OSS bucket
-    bucket = "oss://speechiotest-{test_time}/".format(test_time=test_time)
+    bucket = "oss://{bucketName}".format(bucketName=bucketName)
     for meta in wavFile:
         meta = meta.split()
         wavId = meta[0]
@@ -40,17 +40,14 @@
     # 创建bucket
     md_command = "./ossutil64 mb {bucket} -e oss-cn-hangzhou.aliyuncs.com -i {access_key_id} -k {access_key_secret}".format(bucket=bucket, access_key_id=access_key_id, access_key_secret=access_key_secret)
     md_res = os.popen(md_command)
+    for r in md_res:
+        print(r)
 
     time.sleep(5)
-    ossPath = bucket + "wav/"
-    ossWavFile = codecs.open(sys.argv[2], 'w+', 'utf8')
-    for idx, wav in wavDict.items():
+    ossPath = bucket + "/wav/"
+    for wavIdx, wav in wavDict.items():
         # 上传文件
         upload_command = "./ossutil64 cp {wav} {osspath} -e oss-cn-hangzhou.aliyuncs.com -i {access_key_id} -k {access_key_secret}".format(wav=wav, osspath=ossPath, access_key_id=access_key_id, access_key_secret=access_key_secret)
         upload_res = os.popen(upload_command) 
-        # 生成签名URL
-        sign_command = "./ossutil64 sign {osspath}{idx}.wav --timeout {times} -e oss-cn-hangzhou.aliyuncs.com -i {access_key_id} -k {access_key_secret}".format(osspath=ossPath, idx=idx, times=32400, access_key_id=access_key_id, access_key_secret=access_key_secret)
-        res = os.popen(sign_command)
-        for audio in res:
-            ossWavFile.write(idx + "\t" + audio)
-            break
+        for r in upload_res:
+            print(wavIdx + "\t" + r.strip())