Principle: It is made according to the meridian theory of traditional Chinese medicine and the principle that magnetic field can act on human tissues. The earth where human beings live is itself a big magnetic field, which has a very close relationship with human beings, and the human body itself is a small electromagnetic field. The electromagnetic field of healthy people is in a state of adapting to the earth's magnetic field. Once the magnetic field changes, if the electromagnetic field in the human body is out of balance, it will produce various diseases. At this time, if an appropriate magnetic field is applied to the affected part, it can improve the body's regulatory ability and disease resistance, promote the body's metabolism and promote the improvement or rehabilitation of the disease.