Concrete structure is adopted the most widely in construction structure. Owing to being exposed to outdoors environment for a long period of time, concrete structures are corroding and failure, the reliability and durability are becoming a very important study subject. Alkali aggregate reaction (AAR) is one of main structural calamity causing damage, and influence reliability and safety of concrete structures. This paper applies artificial neural network theory and reliability analysis theory to explore an analysis method at evaluating damaged concrete structures.