Abstract: The technical features and technical advantages of integrated compressor are systematically described, its use in underground gas storage injection, booster pumps of gas pipeline and submarine pipeline is presented and its commercial prospect in gas storage and transportation field is forecasted.Integrated compressor is based on magnetic bearing, high speed motor and highpower frequency changer, and it integrates the compressor, motor, cooling system and separation system into the same skid, which is used as a whole installation. No lubricating oil system and sealing systems are designed in the integrated compressor, and its running RPM can be controlled in the range of 35%~105%, which enhances its adaptability under the different conditions.Besides, the advantages of integrated compressor is high RPM, oil-free, unity, intelligence, energy conservation and environment protection, easy to operate with cost-effective. All in all, the integrated compressor is suitable for use in the area which is full of power along gas pipeline.