diff --git a/docs/assets/img/quick_start/v_function/tag_reader_sample.webp b/docs/assets/img/quick_start/v_function/tag_reader_sample.webp
new file mode 100644
index 00000000..fdaec5fc
Binary files /dev/null and b/docs/assets/img/quick_start/v_function/tag_reader_sample.webp differ
diff --git a/docs/en/quick_start/unitv/v_function.md b/docs/en/quick_start/unitv/v_function.md
index ae8c64d3..e487a3fb 100644
--- a/docs/en/quick_start/unitv/v_function.md
+++ b/docs/en/quick_start/unitv/v_function.md
@@ -604,7 +604,7 @@ V-Function is a series of **visual recognition** functional firmware developed b
### Tag Reader
->Detect the label card of the screen and return the binary sequence。
+>Detect the tag card in the screen and return to the binary sequence. Note: Only the fixed label card format is recognized, please refer to the picture below
@@ -625,6 +625,7 @@ V-Function is a series of **visual recognition** functional firmware developed b
- `Get tag location
+ Coordinates and length and width information of the label card
+
```
00000000 00000000
diff --git a/docs/en/unit/can.md b/docs/en/unit/can.md
index 4faa484f..ee347a1d 100644
--- a/docs/en/unit/can.md
+++ b/docs/en/unit/can.md
@@ -102,13 +102,13 @@ It has obvious advantages in the following aspects: High speed low failure rate