The uncomfortable heat in the feet is usually caused by yin deficiency fire, deficiency fire burning fluid and fluid deficiency. In addition to the symptoms of heat in the heart of the feet, it may be accompanied by heat in the palms of the hands, irritability, insomnia at night, dreaminess or weakness, soreness in the waist and knees, cough and phlegm, and redness in the face, which is considered to be yin deficiency fire in the upper jiao or yin deficiency fire in the liver and kidney. If the Yin deficiency is in the upper jiao, that is, the lung, you can use Baihe Gujin Tang to nourish Yin, moisten the lung and stop coughing. When the lung is moistened, the symptoms of Yin deficiency and fire in the hands and feet can be improved. If the waist and knees are sore and weak and at the same time irritable, dreamy, irritable, with a bitter mouth and dry throat, it means that the liver and kidney are deficient in yin and there is heat in the liver meridian, so you should nourish yin, tonify the kidney and clear the liver. If damp-heat is obviously injected, such as dampness entrained in the process of deficiency fire burning fluid, sticky stools or bitterness in the mouth, dryness in the mouth, and an increase in the discharge, this condition should be cleared of damp-heat in the liver and gallbladder, and Gentian Diarrhea Liver Tang can be used.