diff --git a/README.md b/README.md
index aceff073..1e73db48 100644
--- a/README.md
+++ b/README.md
@@ -58,9 +58,9 @@ designed for fast navigation on a physical keyboard without deep menu nesting.
 Expected SD card tile layout:
 
 ```text
-/maps/osm/{z}/{x}/{y}.png
-/maps/terrain/{z}/{x}/{y}.png
-/maps/satellite/{z}/{x}/{y}.jpg
+/maps/base/osm/{z}/{x}/{y}.png
+/maps/base/terrain/{z}/{x}/{y}.png
+/maps/base/satellite/{z}/{x}/{y}.jpg
 /maps/contour/major-500/{z}/{x}/{y}.png
 /maps/contour/major-200/{z}/{x}/{y}.png
 /maps/contour/major-100/{z}/{x}/{y}.png
diff --git a/README_CN.md b/README_CN.md
index 6389c498..d0e4abf7 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -58,9 +58,9 @@ Trail-mate 将 **稳定性、效率与互操作性** 置于功能堆叠与视觉
 SD 卡瓦片目录结构示例：
 
 ```text
-/maps/osm/{z}/{x}/{y}.png
-/maps/terrain/{z}/{x}/{y}.png
-/maps/satellite/{z}/{x}/{y}.jpg
+/maps/base/osm/{z}/{x}/{y}.png
+/maps/base/terrain/{z}/{x}/{y}.png
+/maps/base/satellite/{z}/{x}/{y}.jpg
 /maps/contour/major-500/{z}/{x}/{y}.png
 /maps/contour/major-200/{z}/{x}/{y}.png
 /maps/contour/major-100/{z}/{x}/{y}.png
diff --git a/docs/map/SD_CARD_MAP_STRUCTURE_CN.md b/docs/map/SD_CARD_MAP_STRUCTURE_CN.md
index fa317551..5df63ae4 100644
--- a/docs/map/SD_CARD_MAP_STRUCTURE_CN.md
+++ b/docs/map/SD_CARD_MAP_STRUCTURE_CN.md
@@ -113,4 +113,3 @@
 - 缩放范围：`platform/esp/arduino_common/include/ui/screens/gps/gps_constants.h`
 - Route 列表目录：`modules/ui_shared/src/ui/screens/tracker/tracker_page_components.cpp`
 - Track 列表目录：`platform/esp/arduino_common/src/ui/screens/gps/gps_tracker_overlay.cpp`
-