Abstract: Take the test for the surge line of RF2/3BB36 Gas Compressor in Zhongwei Gas Compressor Station for example, the paper introduces the test method of the surge line. Strong and weak points of this test method are exposed during testing. Authors consider that by means of testing the surge line of the newly-installed gas compressor set, its field performance is verified and the surge parameters measured is inputted into anti-surge control program at one time so as to ensure safe running of the gas compressor sets.