The traditional detection method can not satisfy the new type rocket artillery launch system operation requirement, puts forward an automatic detection method of launch system based on embedded technology. On the basis of researching rocket artillery launch system structure and working principle, develop the portable automatic detection equipment. Carry out the detection analysis and failure location of system key status parameter, and it was tested by long time test. The test results show that, comparing with the traditional detection method, the system detection result is more integrity, real-time, accurate and credible than before.