Acute gastroenteritis depends on which cause it is. If the patient is suffering from bacterial or viral acute gastroenteritis due to improper eating, drinking Huo Xiang Zheng Qi Oral Liquid is not very meaningful. And if it is a kind of gastroenteritis caused by cold, or gastroenteritis caused by heatstroke, Huo Xiang Zheng Qi Oral Liquid is still effective because Huo Xiang Zheng Qi Oral Liquid contains patchouli oil, Cang Zhu, Hou Pu, Chen Pi and other such drugs, which can regulate qi and harmonize the middle, and is widely used for cold, vomiting, diarrhea, abdominal pain, and gastrointestinal type of cold caused by external wind and cold or summer injury and summer dampness. Therefore, for Huo Xiang Zheng Qi Oral Liquid to treat acute gastroenteritis must be divided into etiology, if the acute gastroenteritis is caused by bacteria or virus need to be rehydrated, if bacterial, may be the need for antibiotic symptomatic treatment.