The invention provides a squeezing flat plate mop cleaning tool. The squeezing flat plate mop cleaning tool comprises a mop barrel and a flat plate mop, wherein the flat plate mop comprises a mop rod and a flat plate mop head movably connected to the mop rod, the flat plate mop head is provided with a wiping object, and the mop barrel is provided with a water squeezing area and a cleaning area; a stroking opening squeezing device is mounted on the mop barrel, and during cleaning and water squeezing, the flat plate mop head is rotated to the state capable of performing cleaning and water squeezing; under the cleaning state, the flat plate mop head moves and squeezes between the cleaning area and the stroking opening squeezing device so that the wiping object is subjected to movable squeezing and cleaning, under the water squeezing state, the flat plate mop head moves and squeezes between the water squeezing area and the stroking opening squeezing device so that the wiping object is subjected to movable squeezing for water squeezing. When the squeezing flat plate mop cleaning tool is used, a user holds the mop rod by hands for operation, so that the relative squeezing movement between the flat plate mop head and the stroking opening squeezing device is realized, water squeezing and cleaning are then carried out, the operation is labor-saving, simple and convenient, meanwhile, the mop barrel matched with the flat plate mop is provided, so that water squeezing and cleaning can be conveniently carried out anytime and anywhere.