An experiment studies the forced performances of concrete bending members in three different times of freeze-thaw cycles and reinforced corrosion through fast freeze-thaw method and electrochemical method, it analyzes the influencing law on the anti-deformed capacity of concrete bending member influenced by the phenomenon of frost-heave and reinforced. On this basis, it builds a stiffness calculation model of concrete bending member in freeze-thaw & Corrosion environment.