Huoxiang Zhengqi Water, the name of Chinese patent medicine, is a kind of summer-heat dispelling agent, which has the effects of relieving exterior syndrome, eliminating dampness, regulating qi and regulating middle energizer. It can be used for treating common cold caused by exogenous wind-cold, internal injury and dampness stagnation, or summer-heat injury and dampness, with symptoms such as headache, chest tightness, abdominal distension, abdominal pain, vomiting and diarrhea. Gastrointestinal cold with the above symptoms.