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The equipment of satellite communication earth station has a long service life after being equipped. In daily work, some key indexes are tested manually by staff according to their experience and equipment such as Spectrum Analyzer. As a result, the data record is scattered, the applicability is low, and the performance attenuation of the whole set of equipment is difficult to measure. Based on this, through customizing the embedded platform and the performance test flow, using the performance test principle and the instrument control technology, collecting and processing the corresponding node frequency spectrum information, using the multi-source data to carry on the synthesis judgment and the analysis, finally, the on-line device performance test data is obtained. The data is displayed visually through the curve. The performance test process of the whole earth station equipment is complete. Because the test results recorded by the system can be compared, the staff can sense the change of the equipment performance and do the related preventive work well, so as to avoid the influence of the equipment failure on the work. By comparing the related parameters of the system before and after use, the system has the advantages of fast, accurate and good openness in performance testing. The test data obtained by the system also provide the data base for the following intelligent operation and maintenance.