There is no record of Four Sons Soup in authoritative sources, only Four Gentlemen Soup. It consists of four main herbs: ginseng, poria, atractylodes and licorice, which are decocted in water and have the effect of strengthening the spleen and benefiting the qi. In Four Gentlemen Soup, ginseng can strengthen the stomach and spleen, and replenish vital energy (replenish the root of the body’s qi); atractylodes macrocephala can strengthen the spleen and dry dampness (strengthen the spleen and get rid of dampness); Poria can facilitate the movement of water and seepage of dampness (promote the movement of water and liquid to get rid of dampness), and with the atractylodes macrocephala, it can enhance the effect of eliminating dampness; and roasted licorice can harmonize the various medicines (harmonize the properties of different Chinese medicines). Sijunzi Tang is effective in treating symptoms such as loose stools, shortness of breath, poor appetite and yellowish color. Adverse reactions and contraindications have not been clarified. During the medication, spicy and greasy food is not recommended. Drug use needs to be under the guidance of a physician, it is recommended to go to the hospital in time.