The invention discloses a Y-shaped chemical foam dust removing system device for a mine. The Y-shaped chemical foam dust removing system device for the mine comprises a container, a gas source and a mixer, wherein an outlet is formed in the bottom of the container, a water outlet pipe is introduced from the outlet, is sequentially connected with a pneumatic pump, a first regulating valve and a first one-way valve and is then connected into an inlet of the mixer; a gas pipe is introduced out from the gas source, is sequentially connected with a second regulating valve and a second one-way valve and is then connected into the inlet of the mixer; and a pipeline is introduced from an outlet of the mixer and is sequentially connected with a buffer and a spray head. The Y-shaped chemical foam dust removing system device has the advantages that foam dust removing agents and water are proportionally mixed for forming mixed liquid to be stored into the container; the mixed liquid is conveyed into a dust removing system through the pneumatic pump; the flow rate and the pressure of the mixed liquid can be controlled through regulating the gas supply pressure of the pneumatic pump; and the stability of the system can be ensured.