diff --git a/cplusplus/level1_single_api/7_dvpp/vpc_sample/readme.md b/cplusplus/level1_single_api/7_dvpp/vpc_sample/readme.md
index b754d43a3994732849a6405ec6158a3617c1ace6..2cee36112f36667678653a4c7d846448b327d01a 100644
--- a/cplusplus/level1_single_api/7_dvpp/vpc_sample/readme.md
+++ b/cplusplus/level1_single_api/7_dvpp/vpc_sample/readme.md
@@ -138,6 +138,7 @@ DVPP中的VPC功能模块，实现图片的抠图、缩放、边界填充、色
       -   in\_image\_file：输入图像文件的路径，包含文件名。
       -   out\_image\_file：输出图像文件的路径，包含文件名。
       -   thread\_num：线程数
+      -   queue_len：通道任务队列深度
       -   test\_type，该参数表示测试的功能类型，各取值的含义如下：
           -   1：抠图
           -   2：缩放
diff --git a/cplusplus/level1_single_api/7_dvpp/vpc_sample/src/common/sample_comm.h b/cplusplus/level1_single_api/7_dvpp/vpc_sample/src/common/sample_comm.h
index e38beb292aab38aebbdadd9077578f7a971bfca1..4b3708bdb42b1d37a7a9bece5450862f746ff501 100644
--- a/cplusplus/level1_single_api/7_dvpp/vpc_sample/src/common/sample_comm.h
+++ b/cplusplus/level1_single_api/7_dvpp/vpc_sample/src/common/sample_comm.h
@@ -96,6 +96,7 @@ struct VpcAttr {
     uint32_t destTopOffset{0};
     uint32_t testType{0};
     uint32_t chnNum{1};
+    uint32_t queueLen{0};
     uint32_t bitwidth{8}; // initialize the bit width to 8
     uint32_t threadNum{1};
     uint32_t loop{1};
diff --git a/cplusplus/level1_single_api/7_dvpp/vpc_sample/src/sample_vpc.cpp b/cplusplus/level1_single_api/7_dvpp/vpc_sample/src/sample_vpc.cpp
index 0e14482ec9f55a340132ab6915968eac1739d44e..3f99e2b743aaa1654dbdbaaccf6601160fe7ff02 100644
--- a/cplusplus/level1_single_api/7_dvpp/vpc_sample/src/sample_vpc.cpp
+++ b/cplusplus/level1_single_api/7_dvpp/vpc_sample/src/sample_vpc.cpp
@@ -91,6 +91,9 @@ void get_option_1(int c)
         case 'V':
             g_vpc_attribute.outHeightAlign = atoi(optarg);
             break;
+        case 'l':
+            g_vpc_attribute.queueLen = atoi(optarg);
+            break;
         default:
             SAMPLE_PRT("this is default!\n");
         break;
@@ -107,6 +110,7 @@ void get_option(int argc, char **argv)
             {"in_format", 1, 0, 'f'},
             {"in_bitwidth", 1, 0, 'b'},
             {"chn_num", 1, 0, 'c'},
+            {"queue_len", 1, 0, 'l'},
             {"thread_num", 1, 0, 't'},
             {"out_width", 1, 0, 'd'},
             {"out_height", 1, 0, 'g'},
@@ -150,7 +154,7 @@ void get_option(int argc, char **argv)
         };
 
         int32_t c = getopt_long(argc, argv,
-            "w:h:f:b:c:t:d:g:e:m:r:s:p:u:v:x:y:i:L:T:C:D:F:O:W:M:I:0:1:2:3:4:5:6:7:8:Q:U:P:N:X:Y:Z:V",
+            "w:h:f:b:c:l:t:d:g:e:m:r:s:p:u:v:x:y:i:L:T:C:D:F:O:W:M:I:0:1:2:3:4:5:6:7:8:Q:U:P:N:X:Y:Z:V",
             long_options, &option_index);
         if (c == -1) {
             break;
@@ -280,7 +284,7 @@ int32_t test_entry_single_chnl(TEST_FUNC test_func)
     // create vpc channel
     hi_vpc_chn chnId;
     hi_vpc_chn_attr stChnAttr {};
-    stChnAttr.attr = 0;
+    stChnAttr.attr = g_vpc_attribute.queueLen;
     s32Ret = hi_mpi_vpc_sys_create_chn(&chnId, &stChnAttr);
     if (s32Ret != HI_SUCCESS) {
         SAMPLE_PRT("Call hi_mpi_vpc_sys_create_chn failed, ret = %#x\n", s32Ret);