In view of the lack of correlation and top-level indicators in domestic “six characteristics” design technology, the integrated design of performance and “six characteristics” was carried out by using failure mode effect and criticality analysis (failure mode effect and criticality analysis, FMECA) technology. This paper expounds how to carry out FMECA analysis in the “six characteristics” design work, and takes a naval gun equipment component as an example to discuss how to use FMECA to carry out the integrated design of performance and “six characteristics”. The results show that FMECA technology is of great value to improve the quality of naval gun equipment.