diff --git a/README.md b/README.md
index 382dc33..bf5adfb 100644
--- a/README.md
+++ b/README.md
@@ -12,5 +12,6 @@
 ADC采样问题:
 
     1. ADC芯片和MCU之间总线速率无法大于2M, 否则ADC芯片初始时，会报CRC错误
+    2. 采样率大于24k时，采集到的数据会出现错误，原因未知
 
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