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Currently there are two problems in analog circuit fault diagnosis and testing process:test signal continuity and tolerance characteristics of the test signal caused a huge number of test signals, the representation of fault knowledge is complex, compile test program mostly based on the decision knowledge of artificially generated. To analysis the IEEE1232 standard architectures and the requirements of inference engine, this article expanse the IEEEE1232 model system for expansion, propose a diagnose knowledgebase generating protocol which contains feature extraction technology and various AI diagnostic methods, comply with 1232 standards diagnose knowledgebase design and implement the automatic analog TPS generating system. Improve the portability of diagnostic knowledge, achieve the TPS automatically generated. The simulation results demonstrate the feasibility of the scheme.