Anti-tank short range missiles can be categorized in the most widely used weapons in the recent ground battle field. Development of a trusted autopilot for these kinds of missiles is a very critical issue. Although classical control techniques can provide a good and stable solution, but with time, the uncertainties increase and hence the designed classical controller (CC) is no longer valid to cope with this kind of problems. This paper represents a lateral displacement controller design of a missile model. Classical control technique shows satisfactory results in missile maneuvering while it fails to intercept the target in case of thrust degradation (aging of the missile rocket motor) and uncertainties in aerodynamics. A new lateral autopilot design for a roll stabilized skid to turn (STT) missile using fuzzy control technique is adopted and introduced in this paper. In this new controller the parameters of fuzzy logic are designed to optimize the performance characteristics of the plant. The simulation results show that the fuzzy logic control shows better performance in case of thrust degradation and uncertainties in aerodynamics.