Novel dosing device for composite sewage treatment agent

The utility model belongs to the technical field of sewage treatment, and particularly relates to a novel compound sewage treatment agent adding device which comprises an agent box, a motor and a positioning mechanism, a top cover is arranged at the top of the agent box, an agent adding pipe is arranged on the top cover, and an agent discharging pipe is arranged at the bottom of the agent box; the motor is arranged in the center of the top of the top cover, the bottom of the motor is connected with a stirring shaft extending into an inner cavity of the medicine box, and a stirring rod is arranged on the stirring shaft; the positioning mechanisms are arranged on the two opposite sides of the pesticide box, each positioning mechanism comprises a square pipe, a telescopic rod, a clamping block, an adjusting screw rod and a clamping plate, the positioning mechanisms are arranged on the two sides of the device, the positioning mechanisms can stretch out and draw back, the clamping positions can be adjusted, the de