Caterpillar sponge mop

The utility model relates to a caterpillar sponge mop, comprising a handle and a mop head. The utility model is characterized in that a sponge barrel arranged on the mop head is made into a caterpillar shape, the caterpillar-shaped sponge barrel is arranged on a top and a bottom guide roller shafts, wherein, an upper guide roller shaft is used as a driving roller shaft and is arranged on opening slot holes, and the opening slot holes are arranged on supporting plates which are fixed at both sides of the mop head. A lower guide roller shaft used as a driven roller shaft is arranged on an opening slot hole at the bottom end of the mop head, and the mop head is also provided with a pressure roller which can adjust the water content of the sponge barrel. The utility model has the advantages of reasonable structure, multi-time utilization with once cleaning, convenient utilization, high efficiency and convenient replacement of the sponge barrel.