In order to solve the problem of unstable quality of remelting coating caused by the lack of intelligent operation control system in traditional induction heating equipment,the composition and operation mode of the intelligent operationcontrol system of highfrequency induction remelting were designed.The intelligent tracking and controllable function of highfrequency induction remelting integrated device was realized.The remelting coating of NF201 nickelbased selffluxing alloy was prepared by this system,and the microstructure and hardness of the coating were compared with those prepared by plasma spray welding.The results show that compared with plasma spray welding coating,the remelting coating prepared by intelligent operation control system of high frequency induction remelting has more excellent microstructure and mechanical properties,its microstructure is more compact and delicate,porosity and defect size are smaller,hardness is higher,and hardness range is smaller,which verifies that the intelligent operation control system can be used to effectively improve the quality of induction remelting coating.