One machine to handle your entire home floor cleaning
Dual extended mechanical arms with millimetre-level edge cleaning
15000Pa powerful suction fan blower
Main and side brushes with anti-tangle technology
Clean a 180m² home in one go
129° ultra-wide-angle structured light for smart obstacle avoidance
Smart carpet cleaning
360° scanning for automated route planning
Deeper cleaning of dust in corners
Extendable brushing and mopping arms for precise edge cleaning
Dual mechanical arms dynamically extend and retract the side brush and mop pad to effectively clean along edges and in corners, for wider edge coverage and more efficient cleaning.
The side brush extends and retracts flexibly as needed
When a corner is detected, the side brush actively extends to achieve zero-distance edge cleaning for a deeper clean.
0mm*
Distance from corners
100%*
Coverage of edges and corners
Outward, flexible mop pad extension delivers millimetre-level edge cleaning
The vacuum automatically extends the mop pad to clean along walls and around obstacles, reaching as close as 1mm* for more efficient edge cleaning.
Outer corner
Automatic turning for fewer missed spots
Inner corner
Automatic reversing for full coverage
Anti-collision mop pad tray
Protects edges of furniture
Outer corner
Automatic turning for fewer missed spots
Inner corner
Automatic reversing for full coverage
Anti-collision mop pad tray
Protects edges of furniture
Outer corner
Automatic turning for fewer missed spots
Inner corner
Automatic reversing for full coverage
*100% corner cleaning coverage with 0mm gap to edges: Data comes from Xiaomi Internal Labs. Under laboratory test conditions in standard vacuuming mode, the inner right-angle edge coverage reaches up to 100%, with the side brush extending to maintain a 0mm distance from edges. Actual results may vary depending on the environment and usage conditions. Please refer to the actual experience.
*Dynamic edge mopping down to 1mm: Data comes from Xiaomi Internal Labs. Under laboratory test conditions, when mopping along edges, the distance between the extended mop pad and the wall measured no more than 1mm.
15,000Pa powerful suction fan blower* eliminates stubborn dust efficiently
Equipped with a flagship proprietary high-speed fan and aerospace-grade aluminium-magnesium alloy fan blades, the vacuum delivers enhanced cleaning performance, efficiently removing hair, fine dust and daily dirt from floors.
99%
Large particle collection rate*
*15,000Pa powerful suction fan blower: The suction of the fan blower was measured to be up to 15000Pa using a vacuum gauge with a 0–35kPa measurement range and 0.01kPa precision at the inlet of a fully charged robot vacuum. Data comes from Xiaomi Internal Labs. Results may vary slightly depending on different testing environments.
*99% large particle collection rate: Data comes from Xiaomi Internal Labs. The S40 Pro achieves a 99% collection rate for large particles on hard floors when operated in standard vacuuming mode. Actual results may vary depending on environment and usage scenario. Please refer to the actual experience.
Dual-mop pad rotary cleaning for high-efficiency dirt removal
The vacuum simulates a hand-wiping motion to effectively remove dirt from floors. Its water tank features adjustable flow, ensuring the mop pads stay optimally wet for deep cleaning with minimal water stains.
180rpm*
Rotary cleaning
3 water flow levels
For moisture adjustment
*180rpm: Data comes from Xiaomi Internal Labs. Using an infrared tachometer, the mop pads were measured to rotate at 180 ± 10 rpm.
Say goodbye to hair tangling*
Dual anti-tangle system for the whole vacuum means less hassle for you
The innovative Y-shaped anti-tangle roller brush with bristles and an anti-tangle side brush provide a safe and efficient solution to hair entanglement so less maintenance is required overall.
Step1: Block
The bristles in the first row block hair
Step2: Detangle
The Y-shaped bristles in the second row detangle hair
Step3: Gather
Bristles gather hair to prevent tangling
Step4: Vacuum
15000Pa strong suction sucks hair into the dust box
Anti-tangle design on two ends of the roller brush
Integrated end caps tightly seal the sides of the roller brush, effectively preventing hair from being pulled in from the ends.
Clean a 180m² home in one go without needing to worry about battery life or running out of water
Equipped with a 5200mAh* large-capacity battery, a single charge powers vacuuming and mopping across an area of up to 180m²*. Featuring a 310mL water tank and a 430mL large dustbin, it ensures continuous water supply for consistently wet mopping and efficient cleaning.
430mL dust box capacityJust empty it on weekends
310mL water tank volumeNo need for frequent refills
Large 5200mAh batteryClean large homes in one go
*5200mAh is the nominal battery capacity.
*180m²: Data comes from Xiaomi Internal Labs. In an open environment under routine maintenance mode, at quiet suction level and level 1 water flow, with a full water tank and vacuum set to vacuuming & mopping mode, the cleaned area recorded on Xiaomi Home app was no less than 180m². Actual cleaning area may vary depending on home environment and usage habits. Please refer to the actual dimensions.
Nimble obstacle avoidance
The smart carpet-recognition system automatically lifts mop pads to keep carpets dry
Equipped with ultrasonic sensors, the vacuum automatically lifts the mop pads by 10mm* upon detecting carpets to prevent them from getting wet. At the same time, you can enable automatic carpet boost to powerfully remove dust embedded deep within carpet fibres.
Clean carpet first
Low-pile carpetsVacuuming prioritised
Carpet avoidance
Long-pile carpetsIntentionally avoid
Carpet crossing
Bathroom matClimb over, instead of vacuuming
Ignore carpets
Rooms with no carpetsVacuum and mop according to your preferences
Detects carpet and automatically raises mop pads
4 carpet cleaning modes available
Prevent secondary contamination
When cleaning is complete, the vacuum returns to the charging dock and automatically retracts the mop pads.
*10mm: Data comes from Xiaomi Internal Labs. The mop pads can automatically raise up to 10mm. For carpets with pile heights over 5mm or for extra moisture protection, it is recommended to use "Bypass Carpet" mode. Actual experience may vary depending on the environment and usage. Please refer to actual performance.
*Automatic carpet boost: To enable this function, after the first cleaning is completed, tap the "Map Edit" icon in the upper right corner of the device homepage in the app > select Carpet Edit > choose the carpet area on the map > tap Carpet Preferences > and turn on Carpet Boost. You can also customise carpet cleaning plans for each carpet in your home through the app, with options including "Clean carpet first", "Carpet avoidance", "Carpet crossing", and "Ignore carpets".
129° wide-angle laser scanning is precise to the millimetre to avoid getting stuck
Equipped with a wide-area structured light obstacle avoidance system, its 129° ultra-wide field of view allows the vacuum to detect low-lying obstacles. It navigates precisely and avoids collisions with ease, even in low-light environments.
Identify obstacle edges
Real-time measuring to avoid collisions
Anti-fall edge sensors
Stair detection to prevent falling
Edge-detection sensor
Precise drop recognition during close-edge cleaning
*Before the vacuum maps your space for the first time, it is recommended to clear obstacles to ensure the best user experience. Obstacle avoidance performance may vary depending on your home environment. Please refer to the actual usage experience.
20mm obstacle-climbing* capability
Easily cross thresholds and continue cleaning
Equipped with a smart floating main brush cover that automatically adapts to varying floor heights and a durable brushless motor, the vacuum easily climbs over obstacles up to 20mm high. These features reduce the risk of collisions and getting stuck, ensuring smooth and efficient cleaning.
*20mm obstacle climbing: Data comes from Xiaomi Internal Labs. Under laboratory testing conditions, the vacuum was tested on a platform with a 20mm height difference to verify its climbing ability in different operating modes.
Efficient autonomous cleaning
LDS laser navigation with 360° scanning for quick mapping
Featuring cutting-edge LDS laser navigation, the vacuum performs a 360° scan of your home, quickly creating an accurate map. It remembers your layout for seamless cleaning without repeated scans.
Quick mapping
Route planning
Multi-storey mapping memory
Resumes cleaning where it left off
Automatically plans cleaning routes using comprehensive S-curve coverage
Every cleaning step is accounted for, allowing the vacuum to operate normally under both low and bright lighting conditions.
Supports 4 cleaning modes
The four cleaning modes cater to multiple home cleaning scenarios with ease, for a deeper clean every time.
Vacuuming before mopping
Simulates a manual deep cleaning by vacuuming before mopping
Vacuuming
Eliminates pet hair, debris and dust for a fresh, shared living space
Mopping
Removes stubborn stains such as coffee and milk from the kitchen floor, leaving surfaces spotless
Vacuuming & mopping
Ideal for daily upkeep delivering clean and efficient maintenance
Convenient smart control
Remotely manage cleaning with Xiaomi Home app for convenient cleaning when you're not at home
Schedule and start cleaning tasks remotely from anywhere with Xiaomi Home app. You can set restricted zones and customise settings — putting full cleaning power control at your fingertips.
Cleaning of designated furniture regions*Tap to clean regions near the dinner table and litter box
No-go area recommendationsAutomatic recommendations for no-go areas after repeatedly getting stuck
Cleaning progress display*Remaining cleaning time visible at a glance
Smart cleaning reportCleaning "black box" available anytime
*Cleaning of designated furniture areas: This feature can be used after a map has been created. On the device homepage of the Xiaomi Home app, tap the "Edit Map" icon in the top right corner > Edit > Furniture Edit. After editing and saving the correct furniture locations on the map, return to the device homepage in the app. You can then tap on the furniture icon on the map to start targeted furniture area cleaning.
*Cleaning progress display: The estimated time is calculated in real time by the software based on the current cleaning task and remaining area. The estimate is for reference only and may vary due to environmental factors. Please refer to actual conditions.
Compatible with Amazon Alexa and Google Assistant for voice control*
OK Google, start cleaning
Alexa, start cleaning
*Compatible Alexa and Google Assistant-enabled devices are required. Google Assistant is not available in certain languages and countries. Google, Google Home, and Google Nest Mini are trademarks of Google LLC. Alexa is not available in certain languages and countries. Alexa and all related logos are trademarks of Amazon.com, Inc. or its affiliates. Please refer to official websites for more information.
*The images on the page are for illustrative purposes only. Actual product effects (including but not limited to appearance, colour and size) and images (including but not limited to background, UI and illustrations) may vary slightly. Please refer to the actual product.
*Unless otherwise specified, all data and statistics come from manufacturers. Actual results may vary due to different usage scenarios.
*Anti-tangle: The main brush and side brush of the robot vacuum can reduce hair entanglement during cleaning. Actual performance may vary depending on usage scenarios.
