The invention relates to the field of boron carbide production, in particular to a mixer truck for production of boron carbide. The mixer truck comprises a truck body, wherein the rear of the truck body is provided with a lifting device, the lifting device is hinged with the truck body through a frame body, and the material discharging end of the lifting device is connected with a material feedingmouth in the top surface of the truck body; the truck body includes a base, a stirring bin is arranged at the upper end of the base, and the stirring bin is divided into three layers from top to bottom; the uppermost layer is a high pressure water inlet layer, the middle layer is a stirring drive layer, and the lowest layer is a stirring layer; a stirring shaft is arranged in the stirring layer,the stirring shaft has an interior of a hollow structure, and a water outlet is formed in the stirring shaft; stirring blades are arranged on the stirring shaft, the stirring drive layer is provided with a driving motor, and the output shaft of the driving motor is connected with the stirring shaft through a pulley; and a water pipe communicates with the inside of the stirring shaft through the high pressure water inlet layer. The mixer truck has a reasonable structure and novel design, raw materials can be mixed evenly, material discharge is convenient, and cleaning of the mixer truck is convenient; and the mixer truck is suitable for mass production, the production efficiency is improved, and high practicability is achieved.