Si Mu Tang can regulate the spleen and stomach, but you need to be careful to follow the doctor’s instructions to take it. Si Mu Tang belongs to the internal medicine eliminating agents. The main ingredients of Si Mo Tang include Mu Xiang, Citrus aurantium, Betel nut, Wu Yao, etc. It has the effect of smoothing qi and descending rebelliousness, eliminating accumulation and relieving pain (eliminating stagnation and relieving pain). The Spleen is responsible for ascending and clearing, while the Stomach is responsible for descending and reversing. The Spleen and Stomach can regulate the Qi in the middle Jiao by ascending and descending. Patients with weakness of the spleen and stomach usually have symptoms of abnormal elevation of qi, such as abdominal distension, abdominal pain, vomiting, and so on. In Si Mu Tang, Mu Xiang and Hovenia Citriodora have the effects of moving qi to broaden the middle Jiao, regulating qi and relieving pain (relieving pain by unblocking qi); together with Wu Yao and Betel Nut, they have the effects of breaking down qi and eliminating accumulation of stagnant qi, and moving qi and relieving pain (relieving pain by regulating the qi of the human body). Si Mu Tang can be used to treat abdominal pain, vomiting and bloating due to dietary stagnation that weakens the spleen and stomach, which in turn affects the body’s qi and leads to qi blockage (impeded qi flow). In summary, Si Mu Tang can regulate the spleen and stomach. However, in clinical practice, there are various types of spleen and stomach disorders, such as spleen and stomach qi deficiency, spleen and stomach yang deficiency, spleen deficiency and dampness. It is recommended that the patient in the process of treatment, go to the hospital to find a professional Chinese medicine practitioner according to the specific disease to identify the type of disease, targeted medication.