Abstract: With the pursuit of maintenance cost and maintenance effect, condition based maintenance (CBM) has been further developed, as one of the key problems of CBM, fault prediction has become a major research direction in the field of equipment maintenance. At present, the summary of fault prediction is mainly limited to the fault prediction methods, there is not a systematic and comprehensive description of the fault prediction research. In order to have a systematic and comprehensive understanding of the research of fault prediction, a summary of the research on fault prediction of weapon electronic equipment based on state is made from the content, object and method of fault prediction, and the related fault prediction methods are analyzed and combed. Aiming at the problems of fault prediction, based on literature summaries, an analysis method of equipment fault prediction based on state is presented, so as to provide reference for the troops to carry out reasonable and scientific fault prediction.