Replacing the two-in-one water tank control system of the sweeping robot is more stable, and the water outlet is even without water accumulation and dripping, which can not only wipe off the ground stains, but also protect the wooden floor and tile floor. Reduce the wear caused by frequent disassembly and assembly of split fittings, and the buckle and docking interface are not easy to loosen and damage, greatly reducing the replacement frequency of fittings and effectively prolonging the overall service life of the sweeping robot. The cleaning life is more stable, and there are fewer stops in the middle: the internal space layout is optimized, and the ratio of dust storage capacity of the dust box and water storage capacity of the water tank is reasonable, so that a larger area can be cleaned in a single life, and the number of stops for pouring ash and adding water in the middle is reduced. Split-type fittings are prone to the problems of loose buckles and dust entering in gaps, and the two-in-one structure has better sealing performance, effectively avoiding dust accumulation inside the fuselage and damp faults of lines. Less accessories, more worry-free storage and care: there is no need to store idle water tanks and dust boxes separately, bid farewell to the problem of disorderly loss of accessories, and the storage at home is cleaner, and the workload of daily maintenance and sorting is greatly reduced.