Abstract: The high purchase and maintenance costs of key parts and the less maintenance business are the bottleneck problems that restrict the sustainable development of Compressor-Set Maintenance, Repair & Overhaul Center. In order to solve these problems, it is proposed to grasp accurate parts maintenance techniques and expand the market continuously. The deep development of maintenance techniques can be realized from three aspects. First, fulfill the authorized maintenance techniques gradually according to the business requirements. Second, develop the cold-end parts maintenance techniques by means of authorized and independent technology research and development. And third, follow up technology progress and develop hot-end key parts maintenance techniques comprehensively. The maintenance business can be expanded from six aspects. First, develop maintenance business on power turbines of two-type gas turbine. Second, perform overhaul on DLE gas generator of two-type gas turbine. Third, expand the maintenance scope of LM2500+. Fourth, perform maintenance on Solar gas turbines. Fifth, carry out assembly business on new gas turbines. And sixth, carry out foreign services. Finally, it was recommended to reduce the purchase cost of parts using PMA parts and manufacturing the parts domestically. This paper is of great significance for the sustainable development of Compressor-Set Maintenance, Repair & Overhaul Center.