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On the software platform of LabVIEW, control software of engine test analyzer was designed. The control software includes sensors test module, ignition system test module, multi-channel recorder module of electronic signal and engine oscillograph module. The analysis, processing, real-time display, storage and read function of engine signals were accomplished by engine test analyzer software program like the traditional hardware equipment. The reliability and anti-interference ability were increased greatly, the accuracy of every parameter and the stability of the test were realized, and the software function could be adjusted according to the demand. Furthermore, the software of test analyzer has a function of secondary development.