The role of the physical therapy instrument is nothing but heat production, the body can promote local blood circulation under the stimulation of heat, to promote local pain relief or fatigue relief. In addition, the role of physiotherapy instrument is to generate electric waves, so that the body receives bioelectric treatment, take vibration massage, etc. to accelerate local blood circulation. In fact, physiotherapy instrument can choose the way of baking lamp irradiation, because the baking lamp irradiation is more direct and microwave penetration is stronger, can be used for deep tissue physiotherapy, so the physiotherapy instrument only choose the heat-producing function can, but also save money, relatively inexpensive.