diff --git a/docs/en/module/faces_finger.md b/docs/en/module/faces_finger.md
index bb17e128..328d9265 100644
--- a/docs/en/module/faces_finger.md
+++ b/docs/en/module/faces_finger.md
@@ -23,7 +23,7 @@ Communication Protocol: UART.
 -  FACES bottom compatible
 -  Interface Serial： UART2 (16/17)
 -  FPC1020A
-    - Size sensing array: 192*192 Pixel
+    - Size sensing array: 160*160 Pixel
     - Pixel resolution: 256 grayscale levels (8 Bit)
     - The supply voltage VDD:  typical 1.8 V
     - TX Supply voltage Internal generated: <3.3 V
diff --git a/docs/zh_CN/module/faces_finger.md b/docs/zh_CN/module/faces_finger.md
index 017ff8d9..cd683ecb 100644
--- a/docs/zh_CN/module/faces_finger.md
+++ b/docs/zh_CN/module/faces_finger.md
@@ -20,7 +20,7 @@
 - FACES套件兼容
 - UART2（16/17）
 - FPC1020A:
-    - 感应阵列尺寸：192 * 192像素
+    - 感应阵列尺寸：160*160像素
     - 像素分辨率：256灰度级（8位）
     - 电源电压VDD：典型值1.8 V.
     - TX电源电压：<3.3 V