diff --git a/docs/ja/product_documents.md b/docs/ja/product_documents.md
index 4bb68579..60676b28 100644
--- a/docs/ja/product_documents.md
+++ b/docs/ja/product_documents.md
@@ -1,7 +1,9 @@
-# [製品ドキュメント
+# 製品ドキュメント
 
 [中文](zh_CN/product_documents_zh_CN.md) | [English](en/product_documents.md) | 日本語
 
+## Core
+
 <img src='assets/img/product_pics/1.jpg'> <img src='assets/img/product_pics/cores.png'>
 
 | M5Core        | MiniCore      |
@@ -10,7 +12,7 @@
 | [GRAY](ja/product_documents/m5stack-core/m5core_gray)          | /            |
 | [FIRE](ja/product_documents/m5stack-core/m5core_fire)          | /            |
 
-
+## モジュール
 
 <img src='assets/img/product_pics/2.jpg'> <img src='assets/img/product_pics/module.png'>
 
@@ -26,43 +28,43 @@
 | /                     | /                  | /                     |
 | /                     | /                  | /                     |
 
+## アクセサリ
 
 <img src='assets/img/product_pics/5.jpg'> <img src='assets/img/product_pics/accessory.png'>
 
 - [LEGO-CABLE](ja/product_documents/cables/accessory_lego_cable)
 - [FRAME](ja/product_documents/accessory_frame)
 
-
+## ユニット
 
 <img src='assets/img/product_pics/3.jpg'> <img src='assets/img/product_pics/unit.png'>
 
-| 入力/センシングクラス Unit   | 出力/コントロールクラス Unit  | インターフェイスクラス Unit   |
+| 入力/センシング   | 出力/コントロール | インターフェース   |
 | :-------------------: |:------------------------: | :----------------:|
-| [ENV](product_documents/units/unit_env)                   | [RGB](product_documents/units/unit_rgb)                       | [HUB](product_documents/units/unit_hub)               |
-| [IR](product_documents/units/unit_ir)                    | [RELAY](product_documents/units/unit_relay)                         | [3.96PORT](product_documents/units/unit_396port)          |
-| [PIR](product_documents/units/unit_pir)                   | [NeoPixel](product_documents/units/unit_neopixel)                         | /                 |
-| [ANGLE](product_documents/units/unit_angle)                   | [ESP32Cam](product_documents/units/unit_esp32cam)                         | /                  |
-| [EARTH/Moisture](product_documents/units/unit_moisture)        | [M5Camera](product_documents/units/unit_m5camera)                         | /                 |
-| [LIGHT](product_documents/units/unit_light)                 | /                         | /                 |
-| [MAKEY](product_documents/units/unit_makey)                   | /                         | /                 |
-| [BUTTON](product_documents/units/unit_button)                   | /                         | /                 |
-| [Dual-BUTTON](product_documents/units/unit_dual_button)                   | /                         | /                 |
-| [JOYSTICK](product_documents/units/unit_joystick)                   | /                         | /                 |
-| [THERMAL](product_documents/units/unit_thermal)                   | /                         | /                 |
-| [ADC](product_documents/units/unit_ADC)                   | /                         | /                 |
-| [DAC](product_documents/units/unit_DAC)                   | /                         | /                 |
-| [Color Sensor](product_documents/units/unit_color_sensor)                   | /                         | /                 |
-| [ToF](product_documents/units/unit_tof)                   | /                         | /                 |
-
-
-
+| [ENV](ja/product_documents/units/unit_env)                   | [RGB](ja/product_documents/units/unit_rgb)                       | [HUB](ja/product_documents/units/unit_hub)               |
+| [IR](ja/product_documents/units/unit_ir)                    | [RELAY](ja/product_documents/units/unit_relay)                         | [3.96PORT](ja/product_documents/units/unit_396port)          |
+| [PIR](ja/product_documents/units/unit_pir)                   | [NeoPixel](ja/product_documents/units/unit_neopixel)                         | /                 |
+| [ANGLE](ja/product_documents/units/unit_angle)                   | [ESP32Cam](ja/product_documents/units/unit_esp32cam)                         | /                  |
+| [EARTH/Moisture](ja/product_documents/units/unit_moisture)        | [M5Camera](ja/product_documents/units/unit_m5camera)                         | /                 |
+| [LIGHT](ja/product_documents/units/unit_light)                 | /                         | /                 |
+| [MAKEY](ja/product_documents/units/unit_makey)                   | /                         | /                 |
+| [BUTTON](ja/product_documents/units/unit_button)                   | /                         | /                 |
+| [Dual-BUTTON](ja/product_documents/units/unit_dual_button)                   | /                         | /                 |
+| [JOYSTICK](ja/product_documents/units/unit_joystick)                   | /                         | /                 |
+| [THERMAL](ja/product_documents/units/unit_thermal)                   | /                         | /                 |
+| [ADC](ja/product_documents/units/unit_ADC)                   | /                         | /                 |
+| [DAC](ja/product_documents/units/unit_DAC)                   | /                         | /                 |
+| [Color Sensor](ja/product_documents/units/unit_color_sensor)                   | /                         | /                 |
+| [ToF](ja/product_documents/units/unit_tof)                   | /                         | /                 |
 
+## アプリケーション
 
 <img src='assets/img/product_pics/4.jpg'> <img src='assets/img/product_pics/application.png'>
 
-- [BALA](product_documents/applications/application_bala)
+- [BALA](ja/product_documents/applications/application_bala)
 
+## ツール
 
 <img src='assets/img/product_pics/6.jpg'> <img src='assets/img/product_pics/tool.png'>
 
-- [M5Stack USB Downloader](product_documents/tools/tool_usb_downloader)
+- [M5Stack USB Downloader](ja/product_documents/tools/tool_usb_downloader)
\ No newline at end of file