Dajianzhong Tang is a representative formula for the treatment of abdominal pain due to deficiency labor in the treatise on miscellaneous diseases of typhoid fever by Zhang Zhongjing, a medical sage of the Han Dynasty, which mentioned in the original text that “the pain of great cold in the heart and chest, vomiting and inability to eat and drink, cold in the abdomen, rushing upward to the skin, out to see a head and feet, up and down pain and untouchable, Dajianzhong Tang is the main remedy. Therefore, the scope of Dajianzhong Tang is to treat pain in the abdomen, fear of cold, rebellious coldness in the hands and feet, diarrhea and loose stools, vomiting and other symptoms caused by deficiency cold in the spleen and stomach, with the effects of warming the middle of the body, dispersing cold, strengthening the spleen, nourishing the stomach, lowering rebellion and relieving pain. This formula is composed of four herbs: Shu pepper, ginger, ginseng and syrup, of which Shu pepper is pungent and warm to warm the spleen and stomach, dispersing cold and relieving pain; ginger is warm and can warm the spleen and disperse cold, helping Shu pepper to warm the spleen and invigorate Yang; ginseng strengthens the spleen and enhances Qi; syrup is sweet to relieve urgency and pain, and can also nourish the spleen and stomach. Therefore, the whole formula together plays the role of strengthening the middle jiao, relieving urgency and pain, etc. It is a representative formula for warming yang and tonifying deficiency.