In order to test Ethernet communication ability of on-board monitor effectively, professional software test according to RFC2544 test standard was carried out. The Ethernet performance testing indicators definition, test environment setting up, the performance test method and typical performance test scenario design and implementation process of on-board monitor were expounded. Through the professional test, whether equipments meeting the requirements of communication key indicators could be found, as well as communication problems, which guarantee the quality and efficiency of the communication effectively, and provide certain reference for the similar test.