The concrete batching plant at the construction site is a frequently-prone equipment that is prone to failure. Strengthening the maintenance of this equipment has an important role in ensuring the safe construction of the construction site, improving the equipment integrity rate, reducing equipment failures, and ensuring the quality of concrete. Usually, the maintenance of the mixing plant is divided into the maintenance of the tank, the maintenance and adjustment of the hoisting system, the adjustment and maintenance of the stroke limiter, the maintenance of the wire rope and the pulley, the maintenance of the hoisting hopper, the maintenance of the track and the track support, etc. . The tank body is the working device of the concrete mixing plant, and the wear is the most serious. Generally, the lining plate, the blade, the mixing arm and the material door seal should be adjusted and replaced frequently according to the wear condition. After each concrete mixing, the tank body must be flushed in time, and the remaining concrete in the tank and the concrete adhering to the material door must be thoroughly rinsed to prevent the concrete in the tank from solidifying. The flexibility of the opening and closing of the material door should be checked frequently to prevent the material door from being stuck.