Abstract: The main technical parameters, its characteristics and application domestically of MXL185 gas compressor and are described.The application process of MXL185 gas compressors matched with domestic equipment adopted at CNG stations in Dezhou Economic Development Zone is analyzed and compared.The results show that predewatering process, determining the preference control order in gas refueler, gas tank assembly and gas injector can ensure the safety of the station equipment and cut down construction cost based on the single-line gas refueling system and remaining the gas refueling functions by means of trinitarian-line.