For solving the problem of non-tolerance among evaluation indexes, use analysis method of multidimensional matter element to carry out integrate analysis of airborne ammunition technical support security risk assessment. Based on deep analysis of security risk assessment character, ascertain its security risk evaluation index system, establish security risk integrate assessment model, and verify the model by analysis and example. The results show that the method can realize the combination of qualitative assessment and quantitative assessment, and solve the problem of among evaluation indexes and it can be effectively used for security risk assessment of airborne ammunition technical support.