Dachengqi Tang is composed of rhubarb, thick park, hedgehog, manganese nitrate, etc. It has the effect of diarrhea and heat, and it is the representative formula of Yangming viscera solid evidence, which is mainly used for treating the solid evidence of Yangming internal heat and dryness. The formula of rhubarb, bitter and cold, diarrhea heat through the bowels (eliminating heat, dredging stools), cleansing the stagnation of the stomach and intestines, and can activate blood stasis, which is conducive to the metabolism, so that the gastrointestinal function is restored. In this formula, rhubarb is used in raw form and then placed in the lower part of the body, and its power is even more acute as the king’s medicine. However, rhubarb is long for diarrhea heat push swing, soft solid effect is not good, if only with rhubarb swing, still can not be fast down, so with salty cold manganese nitrate, salty can be soft can be under the salty cold increase liquid (increase the body of water), the formula of manganese nitrate “increase the water rowing boat”, and then rhubarb can play the diarrhea heat swing accumulation, push out the power of the ministerial medicine. The two medicines are necessary for each other, and the power of griming down the heat accumulation is stronger. The stagnation of stagnation within the body prevents qi from working and makes qi stagnation, which makes stagnation more difficult to be excreted. Therefore, using Hou Pu and Citrus aurantium to move qi and disperse stagnation (to make qi smooth and dissolve stagnation), eliminate plaque and remove fullness, and assisting Mangni-Du and Rhubarb to push stagnation and accelerate the excretion of heat stagnation as adjuvant herbs. The adverse effects and contraindications of the above formula are unclear. Dachengqi Tang should be taken under the guidance of a traditional Chinese medicine practitioner and should not be taken blindly on its own.