Abstract: In this paper, the method to upgrade the control system of test cell in Petro China Pipeline Compressors-set Maintenance, Repair & Overhaul Center was put forward to realize the trial run of RB211-24 G multi-configuration gas generator. The null current and PID parameters of the variable inlet guide vane control system were determined according to the experiment results, the reliability of these parameters was verified by means of static and dynamic methods, and the stable operation of the variable stator vane was guaranteed. The exhaust temperature thermocouple wiring method was optimized, so that the purchase investment of spare parts for trial run is saved and the engine test efficiency is improved greatly. By conducting the production test on multi-configuration gas generator, the reliability and compatibility of the upgraded engine test control system are verified, and compatibility of the test cell with the units of different configurations is achieved.