diff --git a/docs/en/12-taos-sql/14-stream.md b/docs/en/12-taos-sql/14-stream.md
index 6f2343d347..e6aaaf0663 100644
--- a/docs/en/12-taos-sql/14-stream.md
+++ b/docs/en/12-taos-sql/14-stream.md
@@ -41,10 +41,14 @@ window_clause: {
     SESSION(ts_col, tol_val)
   | STATE_WINDOW(col)
   | INTERVAL(interval_val [, interval_offset]) [SLIDING (sliding_val)]
+  | EVENT_WINDOW START WITH start_trigger_condition END WITH end_trigger_condition
+  | COUNT_WINDOW(count_val[, sliding_val])
 }
 ```
 
 `SESSION` indicates a session window, and `tol_val` indicates the maximum range of the time interval. If the time interval between two continuous rows are within the time interval specified by `tol_val` they belong to the same session window; otherwise a new session window is started automatically.
+COUNT_WINDOW is a counting window that is divided by a fixed number of data rows.count_val: A constant, which is a positive integer and must be greater than or equal to 2. The maximum value is 2147483648. count_val represents the maximum number of data rows contained in each COUNT_WINDOW. 
+When the total number of data rows cannot be divided by count_val, the number of rows in the last window will be less than count_val. sliding_val: is a constant that represents the number of window slides, similar to SLIDING in intervals
 
 For example, the following SQL statement creates a stream and automatically creates a supertable named `avg_vol`. The stream has a 1 minute time window that slides forward in 30 second intervals to calculate the average voltage of the meters supertable.