Coating mixing device for building decoration

The utility model belongs to the technical field of coating mixing, and particularly relates to a coating mixing device for building decoration, which comprises a mixing tank, a feeding hole is formed in the top of the mixing tank, a feeding hopper is fixedly communicated with the inside of the feeding hole, a groove is formed in one side of the feeding hole, electric push rods are fixedly connected with two sides of the mixing tank, and the electric push rods are fixedly connected with the mixing tank. An output shaft of the electric push rod is fixedly connected with a piston rod, and one end of the piston rod is fixedly connected with a baffle. According to the utility model, the coating can be weighed in and out, so that the coating is mixed according to a certain proportion, the quality of the mixed coating is ensured, the stirring area is increased through the rotation and vertical reciprocating motion of the stirring rod and the scraper blade, the stirring and mixing effect is better, and meanwhile, du