Mop base plate and dewatering barrel fixing seat assorted with mop base plate

The invention discloses a mop base plate and a dewatering barrel fixing seat assorted with the mop base plate. The mop base plate comprises a rotary table rack, a rotary positioning core, a cotton yarn rotary table cover, a cotton yarn rotary table bottom and a reducing mechanism. The rotary table rack is connected with the rotary positioning core which is connected to the cotton yarn rotary table cover, the cotton yarn rotary table cover is connected with the cotton yarn rotary table bottom in a clamped manner, and the reducing mechanism is arranged between the cotton yarn rotary table cover and the cotton yarn rotary table bottom, and is connected with the rotary positioning core. According to the arrangement of the mop base plate, sundries such as cotton yarns or hairs can be prevented from twining a transmission shaft and jamming the same, so that operating efficiency can be improved and service life can be prolonged. In addition, operation is simple since the mop base plate can be rotated by direct manua