Water can be added to moderate hardness, the temperature adjustment key can be selected to suit the temperature, and the symbol of time key (nu) is 20 hours uninterrupted power supply. It can be kept at a constant temperature for 24 hours, and the health care temperature should be adjusted between 36 and 39. The body temperature of tumor patients and patients with other diseases should be gradually adjusted between 40 and 45, and the high temperature time can be maintained for about 1 ~ 2 hours every day.