Application Range&Treatment Principle The blood vessels and acupoints are irradiated by a low-intensity laser with a wavelength of 650nm, and the blood viscosity was reduced through photochemical reaction, so that the hemody-namics, blood lipid, blood glucose metabolism and oxygen carrying capacity were improved. Through the surface irradiation of nasal mucosa, repair the wound, improve the local blood circulation around the nasal cavity, and immune ability of nasal mucosa.