With the continuous development of information and intelligence of weapons,there are increasing requirements for airborne information interaction,and optical fiber communication is widely used in avionics weapon system.By analyzing the key parameters of the airborne fiber bus network system and combining the impact factors of parameters of the optical fiber bus on the mission system,the airborne fiber bus repair quality evaluation index system was constructed,and the gray correlation degree and entropy weight assignment were used to evaluate the quality.Finally,the airborne fiber bus repair quality evaluation system model was proposed.