Abstract:It is important of researching on cruise weapon system’s testability design and analysis and fault diagnosis to improve the testability level, increase the combat readiness, wartime utilization, and continuous fighting capacity. This paper starts analyzing from development of testability at home and abroad, and researches deeply a general testability design and analysis process, proposes a method which is suitable for cruise weapon system’s testability design and analysis in engineering practical aspect through researching deeply on general testability design and analysis flow, including discussing the tools and the process of building testability model, combining with the type and the content of prepared data for building testability model, analyzing the procedure of building testability model and analyzing method based testability model. Finally this paper researches fault diagnosis mode based on D matrix. Hence, this paper is very important effect on cruise weapon system’s testability design and analysis and fault diagnosis in the future.