To resolve the short circuit and broken circuit failure of military aircraft wiring, wiring failure based on proportional hazard model is analyzed for the military aircraft. By analyzing the reason of wiring failure, the model of wiring failure is built for military aircraft and the parameters are estimated for the proportional hazard model. Survival analysis is carried out based on of the SPSS software to compute the failure probability and to calculate the failure time of wirings. The analyzed results show that this model improves the safety and reliability of electrical wirings for aircraft and can provide the research references for the risk assessment of electrical wirings for military aircraft.