The position servo system has higher and higher requirements on response speed, positioning accuracy and antidisturbance performance. Traditional PID control is easy to implement, but it depends on the object model and its performance is limited, so it is difficult to meet the high requirements. Sliding mode control does not depend on the object model and has strong applicability. Therefore, a fuzzy adaptive sliding mode control method for position servo system was proposed, by which the exponential reaching rate was adaptively adjusted. Taking the position servo system as the object, the simulation and experiments for position control and antidisturbance performance were carried out by using the methods of PID control, sliding mode control and fuzzy adaptive sliding mode control. The results show that the fuzzy adaptive sliding mode control is superior to the PID control in fast position and antidisturbance performance; compared with the ordinary sliding mode control, the fuzzy adaptive sliding mode control has better dynamic performance. Therefore, the proposed fuzzy adaptive sliding mode control has better applicability and certain application value in those applications where need fast response and strong antidisturbance performance.