▎ 摘　　要

NOVELTY - The invention claims a mobile public toilet exhaust purifying device, comprising a public toilet main body; the side wall of the public toilet main body is provided with a ventilation opening; the ventilation opening is embedded connected with a purifying frame; the tail end of the purifying frame is provided with a suction fan; two side walls of the purifying frame are correspondingly provided with three groups of clamping grooves at intervals from front to back respectively three groups of the clamping grooves respectively detachably connected with three connecting mechanisms; three of the connecting mechanisms are inserted with a primary filter screen from front to back respectively an efficient filter screen and a graphene catalyst net; the top side wall of the purifying frame is located between the suction fan and the graphene filter mechanism is provided with an ultraviolet sterilizing lamp. The utility model discharges the air in the public toilet, at the same time, the discharged air is purified in multi-stage and then discharged to the outside air; effectively purifying the odour in the public toilet, reducing the content of harmful substance in the gas, which is good for environment-friendly.