diff --git "a/docs/3.\345\210\206\347\261\273.md" "b/docs/3.\345\210\206\347\261\273.md"
index 475684b444ba923cb807999412d7777ce18779b0..076fd822d64fa24e03764aee1b62068cd36cfe3f 100644
--- "a/docs/3.\345\210\206\347\261\273.md"
+++ "b/docs/3.\345\210\206\347\261\273.md"
@@ -256,7 +256,7 @@ Scikit-Learn 提供了一些函数去计算分类器的指标，包括准确率
 
 ```python
 >>> from sklearn.metrics import f1_score
->>> f1_score(y_train_5, y_pred)
+>>> f1_score(y_train_5, y_train_pred)
 0.78468208092485547
 ```