Abstract: As a typical high-gas mine in Binchang and Hungling mine area of Shaanxi Province, the ability of Jianxin Coal Mine to accurately determine coal-bed gas pressure is hampered by the high rate of leakage from the traditional sealing method and the poorly sealed pressure measuring tube.This limits both accurate management of gas hazards and efficient mining.We carried out the direct method of gas pressure measurement in the 4209 working face by optimizing the pressure measurement equipment and process.By replacing segmented galvanized iron pipe with 50m integrated aluminum-plastic pipe, utilizing three-stage dynamic grouting technology, and using composite sealing materials like expanded cement and malisan, the air-tightness of pressure taps were greatly increased.Based on the ‘two roadways with eight holes' hole arrangement scheme, eight pressure measurement holes were symmetrically arranged, and the results showed that the gas pressure at the measurement point of the transport roadway(0.41 MPa) was significantly higher than that of the return air roadway(0.31 MPa),which was attributed to the difference in mining stress.Hence, 0.41 MPa was finally adopted as the design basis for gas extraction.Improvements to the procedure result in a determination error that meets AQ/T1047—2007 standards, a 15% reduction in drilling costs, and a solid basis for precise gas extraction and early warning.