What is the best treatment for this statement is too absolute, the four reverse powder main treatment of yang depression syncope (yang qi does not run smoothly resulting in cold limbs), epigastric and abdominal pain in the ribs, dysentery under the weight of the disease and other conditions. The four reverse powder belongs to the Chinese medicine prescription, has the effect of penetrating the evil spirit to solve the depression, dredge the liver and the spleen. Si Reverse San is mainly used for treating Yang depression and syncope syndrome, which is characterized by lack of warmth in the hands and feet, abdominal pain, dysentery and heaviness in the lower abdomen, or for the syndrome of liver and spleen qi depression. It is often used in the treatment of biliary ascariasis, intercostal neuralgia, gastric ulcer, chronic hepatitis, cholecystitis, etc., which is characterized by depression of liver and gallbladder qi and disharmony between liver and stomach. In the formula of Si Reverse San, Chai Hu is taken as the principal medicine to elevate Yang Qi, dredge the Liver and relieve depression (treating depression by dredging the Liver’s Qi). White peony converges yin, nourishes blood and softens the liver (nourishes blood and softens the liver) as the subject, so that Chai Hu can elevate and dissipate yin and blood without depleting the yin and blood. Hovenia dulcis is used to regulate qi and relieve depression, which is compatible with Paeonia lactiflora to harmonize qi and blood. Glycyrrhiza glabra is used to harmonize all medicines (harmonize the medicinal properties of different Chinese medicines). The adverse reactions, contraindications and precautions of Si Yi San are not clear. If medication is needed, it is recommended to use it under the guidance of a traditional Chinese medicine practitioner, and should not be used without authorization to avoid delaying the condition.