Sifu Tang Oral Liquid is a proprietary Chinese medicine made from traditional Chinese medicines, such as Mu Xiang, Betel nut, Citrus aurantium and Wu Yao, which has the effect of subduing Qi and lowering rebellion, eliminating stagnation and relieving pain. It is used clinically for infants and young children with internal stagnation of milk and food and food accumulation. Symptoms may include abdominal distension, abdominal pain, crying, anorexia, poor appetite, diarrhea or constipation. It can also be applied to middle-aged and elderly people, and is generally used for evidence of food stagnation and qi stagnation, with symptoms such as distension, abdominal pain and constipation. It can also be applied clinically after abdominal surgery and can promote the recovery of gastrointestinal function. Sifu Tang Oral Liquid is mainly for clearing and lowering, there is no clinical evidence of stagnation, and it should not be taken by old and weak patients or those with intestinal obstruction. During the taking period the diet should be light, no smoking and alcohol, spicy, cold, greasy food can not be eaten.