The utility model discloses a coal seam gas pressure measuring pipe fitting. The device comprises a piezometer tube and a pressure gauge joint, the key point is that the pressure measuring pipe is ananti-static flame-retardant polyethylene pipe for a coal mine; the outer diameter of the piezometric tube is 16mm; the wall thickness of the piezometric tube 1 is 2.7 mm; a plurality of air guide holes are respectively formed in the side wall of the front end of the piezometric tube; a pressure gauge connector is arranged at the rear end of the pressure gauge joint; internal threads are arranged on the inner wall of the pressure gauge connector, a connecting insertion pipe is arranged on the pressure gauge connector, the pressure gauge connector and the connecting insertion pipe are an integrated stainless steel connecting piece, the connecting insertion pipe is inserted into the rear end of the pressure measuring pipe, and a sealant layer is arranged between the inner wall of the pressuremeasuring pipe and the outer wall of the connecting insertion pipe. The pressure measuring pipe is the anti-static flame-retardant polyethylene pipe for the coal mine, which meets the standard MT558.1-2005 of the coal industry, and the pressure gauge joint is made of stainless steel, so that the pressure measuring pipe can be processed by a general coal mine enterprise, sealed by super glue and bought in the market of fasteners.