diff --git a/docs/assets/img/product_pics/units/unit_env_grove_a.png b/docs/assets/img/product_pics/units/unit_env_grove_a.png
new file mode 100644
index 00000000..30a60e6e
Binary files /dev/null and b/docs/assets/img/product_pics/units/unit_env_grove_a.png differ
diff --git a/docs/assets/img/product_pics/units/unit_usage_env.png b/docs/assets/img/product_pics/units/unit_usage_env.png
deleted file mode 100644
index 7b1aa092..00000000
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diff --git a/docs/zh_CN/product_documents/units/unit_env.md b/docs/zh_CN/product_documents/units/unit_env.md
index bacac32b..df54d349 100644
--- a/docs/zh_CN/product_documents/units/unit_env.md
+++ b/docs/zh_CN/product_documents/units/unit_env.md
@@ -1,6 +1,6 @@
 # ENV - 温湿度和压力传感器
 
-<img src="assets/img/product_pics/units/M5GO_Unit_env.png" width="30%" height="30%"><img src="assets/img/product_pics/units/unit_usage_env.png" width="30%" height="30%">
+<img src="assets/img/product_pics/units/M5GO_Unit_env.png" width="30%" height="30%"><img src="assets/img/product_pics/units/unit_env_grove_a.png" width="30%" height="30%">
 
 ***