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For helicopter noise airworthy test, Its test conditions、test method and data process algorithm are clearly defined in the airworthiness regulations。The test device、test data and test conditions must submit to Civil Aviation Administration of China(CAAC)。The data process program must also be checked by CAAC with its standard data. There is no ready-made test system that can meet the requirements, especially on real-time data validity judgment and this will run a risk of re-do the high-cost test. To solve this problem, a test system based on VXI bus and data process program were developed, which can greatly increase efficiency, This system were successfully applied on some helicopter’s noise airworthy test.