Aiming at the chaotic phenomenon in the system of synchronous reluctance motor,an adaptivecontrol method is proposed in this paper on the basis of analyzing the motion characteristics.First,in some cases with certain parameters,it is verified that the system will appear complicatedchaotic motion.Then,the Lyapunov index map,bifurcation diagram and phase diagram are analyzed.Then,based on Lyapunov stability theory,an adaptive controller is proposed in the system withknown or unknown parameters,which overcomes the disadvantages of the vacancy rate’s discontinuitybetween general adaptive controller.The simulation result verifies the correctness of the theory analysisand the feasibility of this method.Meanwhile,it also provides a theoretical reference for the studyof excellent control method.