Mop bucket

A mop bucket mainly comprises a bucket body and a dewatering basket arranged in the bucket body through at least one supporting piece, the supporting pieces are embedded into an upper sliding groove and a lower sliding groove through two symmetrically-arranged locating convex blocks and can be located vertically, the upper sliding groove and the lower sliding groove are correspondingly formed in the inner wall of the bucket body, the supporting pieces are externally connected to a pedal on the outer side wall of the bucket body through at least one connected traction rope and can move vertically relative to the pedal. A rolling shaft is arranged in the middle of the lower bottom of the dewatering basket vertically and downwards, a rolling shaft sleeve which allows the rolling shaft to be inserted and corresponds to the rolling shaft is arranged between the supporting pieces, and a steel ball abutting against the end of the rolling shaft is arranged in the rolling shaft sleeve. The mop bucket has the advantages that the structure is reasonable and compact, use is convenient and reliable, storage and transportation are facilitated, and cleaning and dewatering of a mop can be combined into one and completed in a cavity.