Cold fire is usually caused by the imbalance of yin and yang in the body, most commonly seen in Chinese medicine as the symptom of surface cold and internal heat, which can be relieved by Xiao Qing Long Tang with Gypsum Soup, Hau Pao and Ephedra Soup, and Ma Xing Shi Gan Soup. Xiaoqinglong Tang with Gypsum Soup has the function of relieving exterior wind-cold, clearing away heat and removing vexation, and it has a better relieving effect on the symptoms of exterior wind-cold and internal heat, such as lung distension, asthma, irritability, watery gas under the heart, floating pulse, and so on. However, it should be used with caution for those with external wind-heat syndrome and allergy to drugs. Hau Pu and Ephedra Soup has the function of promoting the lungs to lower the rebelliousness, resolving drinks and relieving cough, and can treat cough with floating pulse, asthma, chest fullness (chest fullness and discomfort), irritability, throat unfavorable, but people who are allergic to the drug and people with deficiency of qi and essence should be cautious. The effect of the hemp apricot shi Gan Tang has a pungent cool lung, clearing the lungs and calming asthma, for the external wind, evil heat in the lungs due to body heat, coughing, thirst, chills (fear of cold) and other symptoms have a better effect, but allergic to the drug and cold cough phlegm-heat congestion of the person to use caution. The above drugs for the external surface cold internal heat certificate has a better relief effect, if the relevant conditions, it is recommended that the professional physician under the guidance of the diagnosis of the treatment, not blindly self-medication.