The invention discloses a police car with a lacrimation function. The police car comprises a car body, a supporting plate, a lacrimation injector, an air cylinder, an injector head, a limiting seat and a control rod, wherein a plurality of supporting seats are distributed at the periphery of a top cover of the car body; each supporting seat is provided with a rolling wheel; an annular groove is formed in the lower surface of the supporting plate; the supporting plate is mounted on the rolling wheels of the plurality of supporting seats through the annular groove; the lacrimation injector comprises a tank body, a spraying nozzle and a button switch; the spraying nozzle is connected with the injector head; a piston rod of the air cylinder is connected with the button switch; the limiting seat is fixed in the middle of the top cover of the car body; one end of the control rod is fixed on the supporting plate; after the other end of the control rod penetrates through the limiting seat, thecontrol rod stretches into the car body to form a control end. According to the police car with the lacrimation function, disclosed by the invention, the large-capacity lacrimation injector is effectively combined with the police car so that the lacrimation injector can move rapidly and policing law enforcement officials also can control the lacrimation injector to inject in the car and the aimsof improving the arresting accuracy and improving the arresting efficiency are realized.