diff --git a/src/gausskernel/cbb/bbox/bbox_threads.cpp b/src/gausskernel/cbb/bbox/bbox_threads.cpp
index e303f86e3..0019e9ad7 100644
--- a/src/gausskernel/cbb/bbox/bbox_threads.cpp
+++ b/src/gausskernel/cbb/bbox/bbox_threads.cpp
@@ -103,7 +103,7 @@ s32 BBOX_CloneRun(u32 uFlags, s32 (*pFn)(void*), void* pArg, ...)
 /*
 function name: BBOX_GetTaskNumber
 description: When get a path to specific process, this function will return count of threads below it.
-arguments: An pointer of type char*, including a path to specific process.
+arguments: A pointer of type char*, including a path to specific process.
 return value: An integer that indicates the count of threads below specific process.
 note: none
 date: 2022/8/3
@@ -142,9 +142,17 @@ s32 BBOX_GetTaskNumber(char* szTaskPath)
 }
 
 /*
- * get thread pid
- */
-
+function name: BBOX_GetTaskId
+description: When get a path to specific process, this function will return count of threads below it.
+arguments: The first argument is a structure pointer named pstTaskInfo,its type is struct TASK_ATTACH_INFO*,
+				   we use it as a structure array to store requisite thread infomation, the next argument destines
+                   the max size of the array that the first argument destines. The last argument is a pointer of type
+                   char*, including a path to specific process.
+return value: An integer that indicates the count of threads stored in structure array.
+note: none
+date: 2022/8/3
+contact tel: 18720816902
+*/
 s32 BBOX_GetTaskId(struct TASK_ATTACH_INFO* pstTaskInfo, s32 iSize, char* szTaskPath)
 {
     s32 iProc = -1;
@@ -227,13 +235,19 @@ errout:
 }
 
 /*
- * a ptrace debug thread
- * in      : TASK_ATTACH_INFO - thread information
- *           iPidCount - count of thread information
- *           iDoPtraceCheck - check if ptrace success
- * return  : 0 - success
- *           err code - failed
- */
+function name: BBOX_PtraceAttachPid
+description: The function is used to check the process whose id stored in structure array pstTaskInfo work normally.
+arguments: The first argument is a structure pointer named pstTaskInfo,its type is struct TASK_ATTACH_INFO*,
+				   it is used as a structure array that has stored requisite thread infomation, the next argument destines
+                   the size of the array that the first argument destines, namely how many elements the array has. 
+                   The last argument is an integer to decide if need to check if the trace to destined process
+                   work normally, if normal, corresponding element of array pstTaskInfo's member variable cIsAttached
+                   will change from 0 to 1.
+return value: An integer, if function work normally, the value is RET_OK, else is RET_ERR.
+note: none
+date: 2022/8/3
+contact tel: 18720816902
+*/
 s32 BBOX_PtraceAttachPid(struct TASK_ATTACH_INFO* pstTaskInfo, s32 iPidCount, s32 iDoPtraceCheck)
 {
     u32 i;
@@ -285,13 +299,18 @@ s32 BBOX_PtraceAttachPid(struct TASK_ATTACH_INFO* pstTaskInfo, s32 iPidCount, s3
 }
 
 /*
- * cancel ptrace debug thread
- * in      : TASK_ATTACH_INFO - thread information
- *           iPidCount - count of thread information
- *           iDoPtraceCheck - check if ptrace success
- * return  : 0 - success
- *           err code - failed
- */
+function name: BBOX_DetachAllThread
+description: The function is used to cancel checking the process whose id stored in structure array pstTaskInfo 
+				    work normally, "work normally" means in array pstTaskInfo corresponding element's member 
+                    variable cIsAttached's value is 1.
+arguments: The first argument is a structure pointer named pstTaskInfo,its type is struct TASK_ATTACH_INFO*,
+				   it is used as a structure array that has stored requisite thread infomation, the next argument destines
+                   the size of the array that the first argument destines, namely how many elements the array has. 
+return value: void
+note: none
+date: 2022/8/3
+contact tel: 18720816902
+*/
 void BBOX_DetachAllThread(struct TASK_ATTACH_INFO* pstTaskInfo, s32 iPidCount)
 {
     u32 i;