The utility model discloses a mixing device for mixing a material in a laboratory. The mixing device for mixing the material in the laboratory is characterized by comprising a barrel body and a bracket, wherein the barrel body is arranged on the bracket, a drive device is arranged above the barrel body, the drive device is used for driving a mixing column to rotate, the drive device is connected with the internal mixing column, mixing rods with different directions are arranged on the internal mixing column, a feeding hole is formed in the upper part of the barrel body, the barrel body is provided with a barrel body bottom surface which is aslant arranged so that the barrel bottom forms a lower inclined end and an upper inclined end, a discharging hole is formed in the lower inclined end of the barrel bottom surface, and the discharging hole is opened or closed by a pulling plate. The discharging hole of the barrel body is in pull type and the barrel body is inclined, so that the material is conveniently discharged out from the barrel without blocking a hole, the mixing device can be cleaned through spraying by using a water pipe from the feeding hole when being cleaned, meanwhile, the mixing rods rotate, and because the barrel bottom is inclined, the problem that the mixing device is not easily cleaned is solved, and the problems that the dust amount is large and the material easily splashes out are solved because the barrel body is sealed.