Bai Hu Tang is a Chinese medicine formula with the efficacy of clearing heat and generating fluids, and is mainly used for treating heatiness of the qi portion of the body. Baihu Tang is from “The Treatise on Typhoid Fever”, in which gypsum is pungent, sweet and cold, and enters the lung and stomach meridians, which is good at clearing and eliminating the heat from the surface through the heat to remove the heat of the qi part of yangming; Zhimu is bitter, cold and moist, which can help gypsum to clear the heat of the lungs and stomach, and nourish yin to moisten the dryness; round-grained rice and sizzling licorice can help the stomach to promote the production of body fluids. It is mainly used for the treatment of Qi heat, which is characterized by strong heat and red face, thirst and thirst, sweating and malignant heat, and a large and powerful pulse. The use of Bai Hu Tang should be noted that the superficial evidence of unresolved fever without sweating, the mouth does not thirst is prohibited; the pulse of floating thin or sinking is contraindicated; blood deficiency fever, pulse flooding does not overcome the heavy pressure is contraindicated; true cold and false heat of the yin Sheng Gue Yang evidence can not be misused. Adverse reactions are not known. Before using Chinese medicines, it is necessary to ask the doctor for identification and use under the doctor’s guidance, so as to avoid improper use of medicines and delay of the condition.