diff --git a/src/gausskernel/cbb/communication/comm_proxy/comm_common.cpp b/src/gausskernel/cbb/communication/comm_proxy/comm_common.cpp
index b48600d5..eea7ded5 100644
--- a/src/gausskernel/cbb/communication/comm_proxy/comm_common.cpp
+++ b/src/gausskernel/cbb/communication/comm_proxy/comm_common.cpp
@@ -51,7 +51,7 @@ description: The function set the affinity of CPU or CPUs destined by argument c
 arguments: An integer representing the id of one CPU or more.
 return value: void
 note: none
-date: 2022/8/4
+date: 2022/8/5
 contact: 18720816902
 */
 void SetCPUAffinity(int cpu_id)
@@ -279,6 +279,15 @@ IPAddrType CommLibNetGetIPType(unsigned int ip)
 #define CMD_STR_MAX 512
 #define CMD_OUTPUT_BUFFER_SIZE 1024
 
+/*
+function name: CommCheckLtranProcess
+description: The function check if the process currently working has loaded transactions.
+arguments: void
+return value: 0 or 1, if 1, then at least one loaded transcation exists, if 0, no one.
+note: none
+date: 2022/8/5
+contact: 18720816902
+*/
 int CommCheckLtranProcess()
 {
     AutoContextSwitch commContext(g_instance.comm_cxt.comm_global_mem_cxt);
@@ -396,6 +405,21 @@ static T GetCommProxySubParameter(const char* str_attr, const char* key)
     return res;
 }
 
+/*
+function name: ParseCommProxyNumaBind
+description: Get the ids of CPU to bind process with specific CPU.
+arguments: The first argument is a pointer of type const char* to a string that indicating
+				   the id of CPUs below NUMA, not necessarily all CPUs.
+                   The second argument is an integer telling us we will get CPUs' id from which position
+                   of array str_attr.
+                   The third argument tells us the number of NUMA system framework.
+                   The fourth argument is a pointer to an integer array used to store CPUs' id gotten
+                   from string str_attr, we can use these ids to bind specific CPU.
+return value: void
+note: none
+date: 2022/8/5
+contact: 18720816902
+*/
 static void ParseCommProxyNumaBind(
     const char* str_attr, const int pos, const int numa_num, int* numa_bind)
 {
@@ -496,6 +520,22 @@ bool ParseCommProxyAttr(CommProxyConfig* config)
     return true;
 }
 
+/*
+function name: CommCheckFilterMatch
+description: This function compare the ip and port allowed with ip and port gotten from
+				    Filter, if they are correspondingly same, it will return true value.
+arguments: The first argument is a pointer of type const char* to a string that indicating
+				   the id and port of the request been sent to Filter, the id and port have been 
+                   separated by character ':'.
+                   The second argument is an integer telling us we the length of the string first 
+                   argument directs.
+                   The third argument tells us the ip allowed.
+                   The fourth argument tells us the port allowed.
+return value: static bool
+note: none
+date: 2022/8/4
+contact: 18720816902
+*/
 static bool CommCheckFilterMatch(const char *filter, int len, const char *ip, int port)
 {
     char *str_ip = NULL;
diff --git a/src/gausskernel/cbb/communication/comm_proxy/comm_dfx.cpp b/src/gausskernel/cbb/communication/comm_proxy/comm_dfx.cpp
index 153ed79a..7336dee1 100644
--- a/src/gausskernel/cbb/communication/comm_proxy/comm_dfx.cpp
+++ b/src/gausskernel/cbb/communication/comm_proxy/comm_dfx.cpp
@@ -175,6 +175,24 @@ void UpdateTxRxStats(int msg_level)
     last_rx_nbytes = current_rx_nbytes;
 }
 
+/*
+function name: parse_monitor_sock_queue
+description: Compare the string recv_buffer with "sockqueue fd:fd", the "fd"
+					after character ':' is an integer indicating file descriptor. If recv_buffer
+                    accords with the format, the function will takes next action to see if
+                    fd is 0, which represents stdin, so the function ends with returned value 0.
+                    If fd isn't 0, compare the third argument type with ParseMonitorTypeSet,
+                    if equal, then get a structure variable including socket descriptor 
+                    destined by the fd gotten from the first argument, if it's NULL, we can
+                    write "fd:[%d], type:[normal fd], no sock queue" into send_buffer.
+arguments: The first argument is a pointer to a string indicating request infomation.
+				   The second argument is a pointer to a string to store sent infomation.
+                   The third argument tells the kind of socket request.
+return value: 0 or 1.
+note: none
+date: 2022/8/5
+contact tel: 18720816902
+*/
 int parse_monitor_sock_queue(char* recv_buffer, char* send_buffer, ParseMonitorType type)
 {
     int length;
@@ -205,6 +223,25 @@ int parse_monitor_sock_queue(char* recv_buffer, char* send_buffer, ParseMonitorT
     return 0;
 }
 
+/*
+function name: parse_monitor_fd
+description: Compare the string recv_buffer with "query fd:fd", the "fd"
+					after character ':' is an integer indicating file descriptor. If recv_buffer
+                    accords with the format, the function will takes next action to see if
+                    fd is 0, which represents stdin, so the function ends with returned value 0.
+                    If fd isn't 0, compare the third argument type with ParseMonitorTypeSet,
+                    if equal, then get a structure variable including socket descriptor 
+                    destined by the fd gotten from the first argument, if it's NULL, we can
+                    write "fd:[%d], type:[normal fd]"(%d--fd) into send_buffer, else write 
+                    "fd:[%d], type:[%d]"(%d--fd,%d--sock_desc->m_fd_type).
+arguments: The first argument is a pointer to a string indicating request infomation.
+				   The second argument is a pointer to a string to store sent infomation.
+                   The third argument tells the kind of socket request.
+return value: 0 or 1.
+note: none
+date: 2022/8/5
+contact tel: 18720816902
+*/
 int parse_monitor_fd(char* recv_buffer, char* send_buffer, ParseMonitorType type)
 {
     int length;