The invention relates to the field of family cleaning tools, and discloses a sterilization mop which comprises a cleaning component, a handle component and a steam component. The cleaning component comprises a U-shaped mop seat, cleaning cotton, a cleaning cotton cover and a force bearing pipe, two ends of the force bearing pipe are mounted in the mop seat, the cleaning cotton cover is fastened on the mop seat, air holes are formed in the side wall of the force bearing pipe, and the cleaning cotton wraps the force bearing pipe. The handle component comprises a mop rod mounted on the mop seat, the mop rod is a double-layer pipe, and an inner pipe of the mop rod penetrates the mop seat. The steam component is mounted on the mop seat or the mop rod and comprises a water tank, a heater and an air duct, the heater is mounted at the bottom of the water tank, and the air duct is connected with the upper portion of the water tank and the two ends of the force bearing pipe. An outer pipe of the mop rod is communicated with the water tank and the inner pipe. According to the sterilization mop, the used mop can be conveniently subjected to steam sterilization, and the total size of the mop is reduced.