The invention relates to a chemical material mixing device, which comprises a base, wherein a stirring barrel is arranged on the base; a cross beam is arranged in the stirring barrel; a bearing is arranged in the middle position of the bottom end of the cross beam; the upper surface of the base is provided with a cavity; a motor is arranged in the cavity; an output shaft of the motor extends intothe stirring barrel to be connected with the bearing; stirring blades are arranged on the output shaft; the upper end of the stirring barrel is provided with a feeding opening; two material distribution plates are arranged in the stirring barrel under the feeding opening; the two material distribution plates are in vertical arrangement; the diameter of the material distribution plate positioned atthe lower part is greater than the diameter of the material distribution plate at the upper part; each material distribution plate is provided with material leaking holes. The chemical material mixing device has the advantages that the work efficiency is high; meanwhile, the work intensity of workers is also reduced; the structure is simple; the use is convenient.