diff --git a/VKernel/Kernel/drivers/fs/fat32/fat32_types.vp b/VKernel/Kernel/drivers/fs/fat32/fat32_types.vp
index 4c3a1ce..356f718 100644
--- a/VKernel/Kernel/drivers/fs/fat32/fat32_types.vp
+++ b/VKernel/Kernel/drivers/fs/fat32/fat32_types.vp
@@ -1329,11 +1329,31 @@ class volinfo:
         if path[pi] == '/' or path[pi] == '\\': pi += 1
         while path[pi] == '/' or path[pi] == '\\': pi += 1
         is_root: int = 1 if path[pi] == 0 else 0
+        # 路径末尾是 "." / ".." 时，follow_path 已经把 dp 打开成目标目录本身。
+        # 不能再按"父目录中的最后一项"去回读目录项：那会把目标目录的第一个子项
+        # 当成最终项打开（例如根目录 cd .. 会误入第一个子目录 APP）。
+        last: int = 0
+        lp: int = 0
+        while path[lp] != 0:
+            if path[lp] != '/' and path[lp] != '\\':
+                last = lp
+            lp += 1
+        ends_special: int = 0
+        if path[last] == '.':
+            if last == 0:
+                ends_special = 1
+            elif path[last - 1] == '/' or path[last - 1] == '\\':
+                ends_special = 1
+            elif path[last - 1] == '.':
+                if last == 1:
+                    ends_special = 1
+                elif path[last - 2] == '/' or path[last - 2] == '\\':
+                    ends_special = 1
         lfn_buf: [256]uint16
         string.memset(&lfn_buf, 0, 256 * 2)
         res: FRESULT = self.follow_path(&dp, path, uint16*(&lfn_buf[0]))
         if res != FRESULT.FR_OK: return res
-        if is_root: return FRESULT.FR_OK
+        if is_root or ends_special: return FRESULT.FR_OK
         entry_sector:           uint64 = dp.sector + (dp.offset / (512 / ENTRY_SIZE))
         entry_offset_in_sector: uint32 = (dp.offset % (512 / ENTRY_SIZE)) * ENTRY_SIZE
         res_wr: FRESULT = self.win_read(entry_sector)