diff --git a/source/module/monitor_trace.h b/source/module/monitor_trace.h
index 7930a04..501add1 100644
--- a/source/module/monitor_trace.h
+++ b/source/module/monitor_trace.h
@@ -14,6 +14,8 @@
 #define MAX_NAME_LEN (15)        // max name length
 #define TIMER_MAX_WATCH_NUM (32) // A timer max watch number at once time
 
+#define DIAG_USER_STACK_SIZE (16 * 1024)
+
 typedef struct {
   pid_t task_id;               // current process id
   char name[MAX_NAME_LEN + 1]; // name
@@ -65,6 +67,15 @@ typedef struct {
   unsigned long stack[BACKTRACE_DEPTH];
 } user_stack_detail;
 
+typedef struct {
+  struct pt_regs regs;
+  unsigned long ip;
+	unsigned long bp;
+	unsigned long sp;
+	unsigned long stack_size;
+	unsigned long stack[DIAG_USER_STACK_SIZE / sizeof(unsigned long)];
+} raw_stack_detail;
+
 typedef struct {
   unsigned int full_argv[PROCESS_CHAINS_COUNT];        //
   char chains[PROCESS_CHAINS_COUNT][PROCESS_ARGV_LEN]; // process chains argv
@@ -78,6 +89,7 @@ typedef struct {
   unsigned long long tv;
   task_detail task;               // brief
   user_stack_detail user_stack;   // user stack
+  raw_stack_detail raw_stack;
   kern_stack_detail kern_stack;   // kernel stack
   proc_chains_detail proc_chains; // process chains argv
 } variable_monitor_task;