diff --git a/assets/share/map/bigmap/FLOOR_1.png b/assets/share/map/bigmap/FLOOR_1.png
new file mode 100644
index 000000000..01c131f19
Binary files /dev/null and b/assets/share/map/bigmap/FLOOR_1.png differ
diff --git a/assets/share/map/bigmap/FLOOR_2.png b/assets/share/map/bigmap/FLOOR_2.png
new file mode 100644
index 000000000..d8182e606
Binary files /dev/null and b/assets/share/map/bigmap/FLOOR_2.png differ
diff --git a/assets/share/map/bigmap/FLOOR_3.png b/assets/share/map/bigmap/FLOOR_3.png
new file mode 100644
index 000000000..adee229a4
Binary files /dev/null and b/assets/share/map/bigmap/FLOOR_3.png differ
diff --git a/tasks/map/assets/assets_map_bigmap.py b/tasks/map/assets/assets_map_bigmap.py
index b9ea3f2cb..9d7b94792 100644
--- a/tasks/map/assets/assets_map_bigmap.py
+++ b/tasks/map/assets/assets_map_bigmap.py
@@ -3,6 +3,36 @@ from module.base.button import Button, ButtonWrapper
 # This file was auto-generated, do not modify it manually. To generate:
 # ``` python -m dev_tools.button_extract ```
 
+FLOOR_1 = ButtonWrapper(
+    name='FLOOR_1',
+    share=Button(
+        file='./assets/share/map/bigmap/FLOOR_1.png',
+        area=(37, 623, 72, 660),
+        search=(17, 603, 92, 680),
+        color=(149, 149, 149),
+        button=(37, 623, 72, 660),
+    ),
+)
+FLOOR_2 = ButtonWrapper(
+    name='FLOOR_2',
+    share=Button(
+        file='./assets/share/map/bigmap/FLOOR_2.png',
+        area=(37, 552, 71, 589),
+        search=(17, 532, 91, 609),
+        color=(171, 171, 171),
+        button=(37, 552, 71, 589),
+    ),
+)
+FLOOR_3 = ButtonWrapper(
+    name='FLOOR_3',
+    share=Button(
+        file='./assets/share/map/bigmap/FLOOR_3.png',
+        area=(37, 480, 71, 518),
+        search=(17, 460, 91, 538),
+        color=(152, 152, 152),
+        button=(37, 480, 71, 518),
+    ),
+)
 OCR_PLANE = ButtonWrapper(
     name='OCR_PLANE',
     share=Button(
diff --git a/tasks/map/bigmap/plane.py b/tasks/map/bigmap/plane.py
index a9424214d..aa74b9647 100644
--- a/tasks/map/bigmap/plane.py
+++ b/tasks/map/bigmap/plane.py
@@ -2,6 +2,7 @@ import re
 from typing import Optional
 
 from module.base.base import ModuleBase
+from module.base.timer import Timer
 from module.exception import ScriptError
 from module.logger import logger
 from module.ocr.ocr import Ocr, OcrResultButton
@@ -10,8 +11,9 @@ from module.ui.scroll import Scroll
 from tasks.base.page import page_map, page_world
 from tasks.base.ui import UI
 from tasks.map.assets.assets_map_bigmap import *
-from tasks.map.keywords import MapPlane, KEYWORDS_MAP_PLANE
-from module.base.timer import Timer
+from tasks.map.keywords import KEYWORDS_MAP_PLANE, MapPlane
+
+FLOOR_BUTTONS = [FLOOR_1, FLOOR_2, FLOOR_3]
 
 
 def world_entrance(plane: MapPlane) -> ButtonWrapper:
@@ -24,6 +26,54 @@ def world_entrance(plane: MapPlane) -> ButtonWrapper:
     raise ScriptError(f'world_entrance() got unknown plane: {plane}')
 
 
+def convert_ingame_floor(plane: MapPlane, floor: int | str) -> int:
+    """
+    Convert floor name in game to the name in SRC.
+
+    Args:
+        plane:
+        floor: Floor name in game, such as -1, 1, 2, "B1", "F1", "F2"
+
+    Returns:
+        int: 1 to 3 counted from bottom.
+
+    Raises:
+        KeyError: If failed to convert.
+    """
+    if isinstance(floor, str):
+        try:
+            floor = int(floor)
+        except ValueError:
+            dic_floor = {
+                'B2': -2,
+                'B1': -1,
+                'F1': 1,
+                'F2': 2,
+                'F3': 3,
+                'F4': 4,
+                'F5': 5,
+            }
+            floor = dic_floor[floor.upper()]
+
+    dic_floor = {}
+    if plane == KEYWORDS_MAP_PLANE.Herta_StorageZone:
+        dic_floor = {-1: 1, 1: 2, 2: 3}
+    if plane == KEYWORDS_MAP_PLANE.Herta_SupplyZone:
+        dic_floor = {1: 1, 2: 2}
+    if plane == KEYWORDS_MAP_PLANE.Jarilo_AdministrativeDistrict:
+        dic_floor = {-1: 1, 1: 2}
+    if plane in [KEYWORDS_MAP_PLANE.Jarilo_RivetTown,
+                 KEYWORDS_MAP_PLANE.Jarilo_RobotSettlement]:
+        dic_floor = {1: 1, 2: 2}
+    if plane in [KEYWORDS_MAP_PLANE.Luofu_Cloudford,
+                 KEYWORDS_MAP_PLANE.Luofu_StargazerNavalia,
+                 KEYWORDS_MAP_PLANE.Luofu_DivinationCommission]:
+        dic_floor = {1: 1, 2: 2}
+
+    floor = dic_floor[floor]
+    return floor
+
+
 class OcrMapPlane(Ocr):
     merge_thres_y = 20
 
@@ -32,6 +82,8 @@ class OcrMapPlane(Ocr):
         result = re.sub(r'[+→★“”,.，、。]', '', result).strip()
         if self.lang == 'ch':
             result = result.replace('迎星港', '迴星港')
+            if result == '星港':
+                result = '迴星港'
         return result
 
 
@@ -51,6 +103,13 @@ PLANE_LIST = DraggablePlaneList('PlaneList', keyword_class=MapPlane, ocr_class=O
 
 
 class BigmapPlane(UI):
+    # Current plane
+    plane: MapPlane = KEYWORDS_MAP_PLANE.Herta_ParlorCar
+    # Current floor
+    # Note that floor always starts from 1 (1, 2, 3, ...)
+    # which is different from the floor in game (B1, F1, F2, ...)
+    floor: int = 1
+
     def _bigmap_world_set(self, plane: MapPlane):
         """
         Pages:
@@ -60,7 +119,8 @@ class BigmapPlane(UI):
         self.ui_goto(page_world)
         self.ui_click(appear_button=page_world.check_button,
                       click_button=world_entrance(plane),
-                      check_button=page_map.check_button)
+                      check_button=page_map.check_button,
+                      retry_wait=1)
 
     def _bigmap_get_current_plane(self) -> Optional[MapPlane]:
         """
@@ -94,7 +154,8 @@ class BigmapPlane(UI):
                     self.device.screenshot()
                 current = self._bigmap_get_current_plane()
                 if current is not None:
-                    return current
+                    self.plane = current
+                    return self.plane
                 if timeout.reached():
                     logger.warning('No plane was selected')
                     if n == 0:
@@ -107,15 +168,18 @@ class BigmapPlane(UI):
         try:
             first = PLANE_LIST.cur_buttons[0].matched_keyword
             if first is not None:
-                return first
+                self.plane = first
+                return self.plane
             else:
-                return KEYWORDS_MAP_PLANE.Herta_ParlorCar
+                self.plane = KEYWORDS_MAP_PLANE.Herta_ParlorCar
+                return self.plane
         except IndexError:
-            return KEYWORDS_MAP_PLANE.Herta_ParlorCar
+            self.plane = KEYWORDS_MAP_PLANE.Herta_ParlorCar
+            return self.plane
 
-    def bigmap_plane_set(self, plane: MapPlane):
+    def bigmap_plane_set(self, plane: MapPlane) -> bool:
         """
-        Set map ti given plane.
+        Set map to the given plane.
 
         Args:
             plane:
@@ -128,16 +192,17 @@ class BigmapPlane(UI):
             out: page_map
         """
         logger.info(f'Bigmap plane set: {plane}')
-        current = self._bigmap_get_current_plane_wrapped()
-        logger.attr('CurrentPlane', current)
+        self._bigmap_get_current_plane_wrapped()
+        logger.attr('CurrentPlane', self.plane)
 
-        if current.world != plane.world:
+        if self.plane.world != plane.world:
             logger.info(f'Switch to world {plane.world}')
             self._bigmap_world_set(plane)
             PLANE_LIST.load_rows(main=self)
 
         if plane.is_HertaSpaceStation:
             PLANE_LIST.select_row(plane, main=self, insight=False)
+            self.plane = plane
             return True
         elif plane.is_JariloVI:
             if plane in [
@@ -155,10 +220,103 @@ class BigmapPlane(UI):
                     PLANE_LIST.load_rows(main=self)
 
             PLANE_LIST.select_row(plane, main=self, insight=False)
+            self.plane = plane
             return True
         elif plane.is_Luofu:
             PLANE_LIST.select_row(plane, main=self, insight=False)
+            self.plane = plane
             return True
 
         logger.error(f'Goto plane {plane} is not supported')
         return False
+
+    def _bigmap_get_current_floor(self) -> int:
+        """
+        Pages:
+            in: page_map
+        """
+        for index, button in enumerate(FLOOR_BUTTONS):
+            # Gray button, not current floor
+            if self.image_color_count(button, color=(117, 117, 117), threshold=221, count=200):
+                continue
+            # White button, current floor
+            if self.image_color_count(button, color=(233, 233, 233), threshold=221, count=200):
+                self.floor = index + 1
+                return self.floor
+
+        # logger.warning('Cannot get current floor')
+        self.floor = 0
+        return self.floor
+
+    def _bigmap_floor_set_execute(self, floor: int, skip_first_screenshot=True) -> bool:
+        """
+        Args:
+            floor: 1 to 3
+
+        Returns:
+            bool: If success.
+
+        Pages:
+            in: page_map
+        """
+        logger.info(f'Bigmap floor set: {floor}')
+        try:
+            button = FLOOR_BUTTONS[floor - 1]
+        except IndexError:
+            logger.error(f'No floor button matches floor index: {floor}')
+            return False
+
+        interval = Timer(2)
+        click_count = 0
+        while 1:
+            if skip_first_screenshot:
+                skip_first_screenshot = False
+            else:
+                self.device.screenshot()
+
+            self._bigmap_get_current_floor()
+            logger.attr('CurrentFloor', self.floor)
+
+            # End
+            if self.floor == floor:
+                logger.info('Selected at target row')
+                return True
+            if click_count >= 3:
+                logger.warning('Unable to set floor after 3 trial, assume floor set')
+                return False
+
+            # Click
+            if interval.reached():
+                self.device.click(button)
+                interval.reset()
+                click_count += 1
+                continue
+
+    def bigmap_floor_set(self, floor: int = 0, ingame_floor: int | str = 0, skip_first_screenshot=True) -> bool:
+        """
+        bigmap_plane_set() or _bigmap_get_current_plane_wrapped() must be called first.
+
+        Args:
+            floor: 1 to 3 counted from bottom.
+                If `floor` given, use it first. One of `floor` and `ingame_floor`
+            ingame_floor: Floor name in game, such as -1, 1, 2, "B1", "F1", "F2"
+            skip_first_screenshot:
+
+        Returns:
+            bool: If success.
+
+        Pages:
+            in: page_map
+        """
+        if not floor:
+            if ingame_floor:
+                try:
+                    floor = convert_ingame_floor(plane=self.plane, floor=ingame_floor)
+                except KeyError:
+                    logger.error(f'Plane {self.plane} does not have floor {ingame_floor}')
+                    return False
+            else:
+                logger.error('bigmap_floor_set() did not receive any floor inputs')
+                return False
+
+        return self._bigmap_floor_set_execute(floor, skip_first_screenshot=skip_first_screenshot)