To satisfy the attack requirements of large falling angle of missile, a guidance and control integration system method for canard/ tail vane composite control missile with falling angle constraint was proposed which could solve the rudder partial saturation problem when the missile terminal attacked and it controlled by single rudder. The integrated model of canard/tail vane composite control missile was built, the sliding mode surface with falling angle constraint was constructed by using sliding mode variable structure control method. And the exponential approach law was used to solve the chattering problem of sliding mode. The simulation results showed that the designed guidance and control integration could satisfy the requirements of miss distance and falling angle constraint at the same time.