diff --git a/docs/API_reference/zh/peripherals/machine.Pin.md b/docs/API_reference/zh/peripherals/machine.Pin.md
index a674ca1f1bd139154b1ee8aadf9ffe3d5cc308e2..de52304ed4a628fb0b4e16e571fc557005ef8fb8 100644
--- a/docs/API_reference/zh/peripherals/machine.Pin.md
+++ b/docs/API_reference/zh/peripherals/machine.Pin.md
@@ -310,8 +310,8 @@ Pin.get_dir()
 | Pin.GPIO44       | EC600U/EC200U/EC200A/EC600M/EC800M/EG810M/EC600G/EC800G/EC800K | GPIO44   |
 | Pin.GPIO45       | EC600U/EC200U/EC200A/EC600M/EC600G/EC800G/EC800K             | GPIO45   |
 | Pin.GPIO46       | EC600U/EC200U/EC200A/EC600G/EC800G/EC800K                    | GPIO46   |
-| Pin.GPIO47       | EC600U/EC200U/EC200A/EC800G/EC800K                           | GPIO47   |
-| Pin.GPIO48       | EC800G                                                       | GPIO48   |
+| Pin.GPIO47       | EC600U/EC200U/EC200A/EC600G/EC800G/EC800K                    | GPIO47   |
+| Pin.GPIO48       | EC800G/EC600G                                                | GPIO48   |
 | Pin.GPIO49       | EC800G                                                       | GPIO49   |
 | Pin.GPIO50       | EC800G                                                       | GPIO50   |
 | Pin.IN           | --                                                           | 输入模式 |