The effects of Po Chi San are mainly to eliminate food stagnation (to promote food digestion), resolve phlegm and calm fright, and the specific use of medication should follow the doctor’s instructions. Po Chi San is a proprietary Chinese medicine made of Liu Shen Qu (fried), Tian Nan Xing (made), Ba Dou Cream, Zhu Sha as the main ingredients, with the function and efficacy of eliminating food stagnation, resolving phlegm and suppressing alarm, it is mainly suitable for the treatment of children with cold stagnation, stopping breastfeeding and stopping food, abdominal distension, constipation and phlegm, and other symptoms of the treatment. The drug is mainly contraindicated in diarrhea, its adverse effects are not clear. Specific medication should be under the guidance of a specialist, not unauthorized use of medication.