diff --git a/src/clock.c b/src/clock.c
index fb7ee447d2d23f0ef1d9c9db073dd2011f17986b..21be3a420303a73db2cc47f840d030444c832e27 100644
--- a/src/clock.c
+++ b/src/clock.c
@@ -33,9 +33,9 @@ static volatile rt_tick_t rt_tick = 0;
 /**@{*/
 
 /**
- * @brief    This function will return current tick from operating system startup
+ * @brief    This function will return current tick from operating system startup.
  *
- * @return   Return current tick
+ * @return   Return current tick.
  */
 rt_tick_t rt_tick_get(void)
 {
@@ -45,7 +45,7 @@ rt_tick_t rt_tick_get(void)
 RTM_EXPORT(rt_tick_get);
 
 /**
- * @brief    This function will set current tick
+ * @brief    This function will set current tick.
  *
  * @param    tick is the value that you will set.
  */
@@ -101,12 +101,12 @@ void rt_tick_increase(void)
 /**
  * @brief    This function will calculate the tick from millisecond.
  *
- * @param    ms is the specified millisecond
+ * @param    ms is the specified millisecond.
  *              - Negative Number wait forever
  *              - Zero not wait
  *              - Max 0x7fffffff
  *
- * @return   Return the calculated tick
+ * @return   Return the calculated tick.
  */
 rt_tick_t rt_tick_from_millisecond(rt_int32_t ms)
 {
@@ -134,7 +134,7 @@ RTM_EXPORT(rt_tick_from_millisecond);
  *           is not an integral multiple of 1000, this function will not
  *           provide the correct 1ms-based tick.
  *
- * @return   Return passed millisecond from boot
+ * @return   Return passed millisecond from boot.
  */
 RT_WEAK rt_tick_t rt_tick_get_millisecond(void)
 {
diff --git a/src/ipc.c b/src/ipc.c
index 57ac453a6847efdc15c8ad942c16515e1e5cb521..a467c141517408fd3bf9b6ca97e5f7c7cd64ae87 100755
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -1234,10 +1234,6 @@ RTM_EXPORT(rt_mutex_control);
  *
  * @param    name is a pointer to the name that given to the event.
  *
- * @param    value is the initial value for the event.
- *           If want to share resources, you should initialize the value as the number of available resources.
- *           If want to signal the occurrence of an event, you should initialize the value as 0.
- *
  * @param    flag is the event flag, which determines the queuing way of how multiple threads wait
  *           when the event is not available.
  *           The event flag can be ONE of the following values:
@@ -1741,9 +1737,6 @@ RTM_EXPORT(rt_event_control);
  *
  * @param    name is a pointer to the name that given to the mailbox.
  *
- * @param    msgpoll is a pointer to the starting address of the memory space you allocated for the mailbox in advance.
- *           In other words, msgpoll is a pointer to the mailbox buffer of the starting address.
- *
  * @param    size is the maximum number of mails in the mailbox.
  *           For example, when the mailbox buffer capacity is N, size is N/4.
  *
diff --git a/src/kservice.c b/src/kservice.c
index 25d34dfc4735ed96015df67dc8c90a3b0b77f2ec..41d81d867782c7a02c5c601ece13e20be134f7df 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -294,11 +294,11 @@ RTM_EXPORT(rt_memcpy);
  * address. If the destination memory does not overlap with the source memory,
  * the function is the same as memcpy().
  *
- * @param  dst is the address of destination memory, points to the copied content.
+ * @param  dest is the address of destination memory, points to the copied content.
  *
  * @param  src is the address of source memory, point to the data source to be copied.
  *
- * @param  count is the copied length.
+ * @param  n is the copied length.
  *
  * @return The address of destination memory.
  */
@@ -590,9 +590,11 @@ RTM_EXPORT(rt_show_version);
 /**
  * This function will duplicate a string.
  *
- * @param  s the string to be duplicated
+ * @param  n is the string to be duplicated.
+ *
+ * @param  base is support divide instructions value.
  *
- * @return the duplicated string pointer
+ * @return the duplicated string pointer.
  */
 rt_inline int divide(long long *n, int base)
 {
@@ -1418,7 +1420,7 @@ void rt_assert_set_hook(void (*hook)(const char *ex, const char *func, rt_size_t
 /**
  * The RT_ASSERT function.
  *
- * @param ex is the assertion condition string.
+ * @param ex_string is the assertion condition string.
  *
  * @param func is the function name when assertion.
  *
diff --git a/src/memheap.c b/src/memheap.c
index 8422b1d802cb5752b47f9123a4cd33fad99e3b06..f9da3ac015b3621bc11e3d7e4b6220b089fb996a 100644
--- a/src/memheap.c
+++ b/src/memheap.c
@@ -1058,7 +1058,7 @@ void rt_memory_info(rt_uint32_t *total,
 /**
  * @brief  This function will print the used memheap infomation.
  *
- * @param  memheap is a pointer of the memheap object.
+ * @param  mh is a pointer of the memheap object.
  */
 void dump_used_memheap(struct rt_memheap *mh)
 {
diff --git a/src/signal.c b/src/signal.c
index e630c0dd975fe8853f7f38ff6bc758df6c2b284f..14201ee948d05656d28a1c0258d40423e8d4562d 100644
--- a/src/signal.c
+++ b/src/signal.c
@@ -217,6 +217,8 @@ void *rt_signal_check(void* context)
  *
  * @param    signo is a specific signal value (range: 0 ~ RT_SIG_MAX).
  *
+ * @param    handler is sets the processing of signal value.
+ *
  * @return   Return the old processing function of this signal. ONLY When the
  *           return value is SIG_ERR, the operation is failed.
  */