Abstract: The present disclosure provides a quick mop cloth replacement mechanism, including a mop rod and a mop head, a mounting cavity is formed inside the mop head and is internally provided with two symmetrically sliding blocks, the sliding blocks are horizontally sliding-fit in the mounting cavity in a sliding manner, a clamping portion is disposed at a head of each of the sliding blocks, the mounting cavity is internally provided with elastic components, which make the sliding blocks have an outward movement trend and realize the mounting of mop cloth, and pull cords for pulling the sliding blocks to move inward are disposed at tails of the sliding blocks. The quick mop cloth replacement mechanism provided by the present disclosure is compact in structure, has a good-looking appearance, can realize quick mop cloth mounting and dismounting, and is simple and labor-saving in operation, thus being good in user experience.