Far infrared refers to infrared rays with a wavelength of 3- 1000 micron. Scientific research shows that the invisible infrared ray, which accounts for 60% of solar energy, is beneficial to human body, and the infrared ray with the wavelength of 5.6- 15 micron is extremely important for human survival and the growth of everything. Life science research has confirmed that the human body itself is a far infrared radiation source, which can absorb and emit far infrared rays. Therefore, when far infrared rays irradiate the human body, when its frequency is consistent with the movement frequency of cell molecules and water molecules between atoms in the body, it will cause resonance effect, and its energy is the highest, which can be absorbed by organisms, which will increase the deep temperature of subcutaneous tissues, and the thermal effect will activate water molecules and make them in a high-energy state, thus increasing the synthesis of biological enzymes needed by human body. At the same time, protein and other biomolecules are activated, thus enhancing the body's immunity and tissue regeneration ability of biological cells, accelerating the supply of nutrients and enzymes, and promoting health.