Chinese medicine believes that the causes of duodenitis are multi-faceted, sometimes the result of a combination of factors, but mainly due to the weak body and spleen and stomach, coupled with dietary disorders, emotional disorders, external evils, internal invasion, damp heat Factors related to birth.

　　Overeating, hunger and dysfunction, overeating and chilling, spicy eating, or long-term drinking, or long-term illness, etc., resulting in spleen and stomach injury, cold and heat interlinked, cold and heat mixed, spleen and stomach up and down disorders; Anxiety, anger, uncomfortable mood, stagnation of liver qi, dereliction of duty, or unhealthy diet hurts the stomach, causing stomach loss and lowering, affecting the liver''s drainage, liver stagnation, stagnation, and horizontal violation of the stomach; endowment temperament depression, Poor emotions, stagnation of liver qi, prolonged heat, depression heat by kidney or body stomach heat, complex heat due to liver stagnation, reversal of stomach, stomach loss and drop; Qi stagnation, qi stagnation and blood do not Smooth, or qi deficiency and weak blood transportation, or blood cold and make the blood veins astringent, or long-term illness into the network, blocking the veins, causing stasis in the blood; the body is weak in the spleen and stomach, or tired internal injuries, or long-term illness does not extend and Spleen and stomach, or eating cold, or improper medication can damage the spleen and stomach, resulting in scorch deficiency, unsatisfactory delivery, and loss of stomach temperature; fever and stomach yin caused by fever, or vomiting, diarrhea, fluid consumption, or plain food like decoction Stir-fried fragrant products, or use warm and dry products too much, consume stomach yin for a long time, stomach loses moisture. All of the above factors can impair spleen and stomach function, dysfunction of qi and blood, and hurt gastrointestinal veins, and present symptoms such as pain and discomfort in the stomach cavity, nausea and vomiting, belching pantothenic acid and other symptoms.

　　The disease should be distinguished from the cold and heat, and the general symptoms of the short course of the disease are more empirical, and the elderly of the course of the disease are more or less syndromes, and at the same time there is a certain relationship between the types of syndromes, which can be transformed and seen together . Normally, liver and stomach disharmony, liver and stomach stagnation, dampness and heat resistance are empirical evidence, insufficient stomach yin, spleen and stomach deficiency and cold are deficiency syndromes, cold and heat mixed, blood stasis and obstruction are syndromes of deficiency and solidity, spleen and stomach deficiency and coldness are cold syndromes, Damp-heat resistance, insufficient stomach yin, liver and stomach stagnation are heat syndrome.