Starch mixing machine

The utility model discloses a starch mixing machine, comprising a mixing barrel in which a mixing part is arranged. The starch mixing machine is characterized in that an annular brush frame is arranged inside the mixing barrel and provided with a clearing part contacting the inner wall of the mixing barrel, a plurality of inverted U-shaped brackets sleeve the barrel wall of the mixing barrel, one end of each of the brackets is connected with the brush frame, and the other end of the bracket is connected with a driving part which drives the bracket to slide along the axial direction of the mixing barrel. When the starch mixing machine stays in the initial state, the brush frame is positioned at the bottom of the mixing barrel; the driving part is turned on to drive the brackets to move upwards during clearing, the brush frame subsequently rolls upwards, and meanwhile, the clearing part on the brush part cleans the side wall of the mixing barrel instead of manually cleaning the mixing barrel by workers who climb up the mixing barrel.