Dope spray marker

The invention discloses a dope spray marker. The dope spray marker is characterized in that a dope barrel is connected with a pneumatic diaphragm pump through a first dope discharging pipe, the pneumatic diaphragm pump is connected with an inlet of a high-pressure nozzle through a second dope discharging pipe, a material spraying control valve is arranged on the second dope discharging pipe, a dope return pipe is connected to the portion, between the material spraying control valve and the pneumatic diaphragm pump, of the second dope discharging pipe, the dope return pipe is connected with thedope barrel, a dope discharging valve is arranged on the first dope discharging pipe, a dope return valve is arranged on the dope return pipe, a cleaning water tank is arranged outside the dope barrel, a partition plate is arranged in the cleaning water tank, an overflow gap is reserved between a top plate of the cleaning water tank and the partition plate, the partition plate divides the interior of the cleaning water t