diff --git a/statistics.md b/statistics.md
index e838f7a91d096..d3a3a70db1e13 100644
--- a/statistics.md
+++ b/statistics.md
@@ -106,7 +106,11 @@ Three system variables related to automatic update of statistics are as follows:
 
 When the ratio of the number of modified rows to the total number of rows of `tbl` in a table is greater than `tidb_auto_analyze_ratio`, and the current time is between `tidb_auto_analyze_start_time` and `tidb_auto_analyze_end_time`, TiDB executes the `ANALYZE TABLE tbl` statement in the background to automatically update the statistics of this table.
 
-When the query is executed, TiDB collects feedback with the probability of `feedback-probability` and uses it to update the histogram and Count-Min Sketch. You can modify the value of `feedback-probability` in the configuration file. The default value is `0.0`.
+When the query is executed, TiDB collects feedback with the probability of `feedback-probability` and uses it to update the histogram and Count-Min Sketch. You can modify the value of `feedback-probability` in the configuration file. The default value is `0.05`. You can set the value to `0.0` to disable this feature.
+
+> **Note:**
+>
+> If you set the value of `feedback-probability` to `0` in the configuration file, a failure will occur and an error will be reported. To disable `feedback-probability`, you need to set the value to `0.0`.
 
 ### Control `ANALYZE` concurrency
 
@@ -307,4 +311,4 @@ Syntax:
 LOAD STATS 'file_name'
 ```
 
-`file_name` is the file name of the statistics to be imported.
\ No newline at end of file
+`file_name` is the file name of the statistics to be imported.