To improve accuracy in identifying damaged structure of military engineering, intellectualized method was proposed for monitoring system. On describing working principle about intellectualized structure of military engineering, damage information fusion theory was proposed, and an information fusion model was built. As damage feature vector was classified in data fusion level, damage feature fusion and partial diagnosis was carried with neural network, and independent evidence was accessed. Evidence information was fused with evidence theory, and diagnosis was ultimately carried out according to damage sentencing guideline. Example showed that model could effectively improve the credibility of damage information diagnosis, which fully testified the validity.