Mouth bitterness may not be all heat symptoms Routine treatment of mouth bitterness In clinical practice, mouth bitterness as a symptom is still relatively common. In Chinese medicine textbooks, mouth bitterness is considered to belong to heat evidence, which is commonly seen in the evidence of fire evil as disease or bile heat. In terms of treatment, if the real fire is inflammation, it is often treated with bitter-cold heat-clearing and fire-removing medicines such as Huang Lian, Scutellaria baicalensis, Gardenia jasminoides and Huang Bai. If it is false fire, that is, due to yin deficiency fire, commonly used raw earth, maitong, xuan shen, turtle board and other nourishing yin and clearing heat and submerging yang products orally, this is the rules and guidelines for the treatment of mouth bitterness. However, the bitterness of the mouth is not all caused by heat, in the heat disease of the time, the main heat of the bitterness of the mouth is undeniable, but in other diseases, the bitterness of the mouth also has the main cold, which suggests that we can not understand the whole picture of the disease based on the bitterness of the mouth alone, more comprehensive systemic symptoms dialectical treatment. In the Yellow Emperor’s Classic of Internal Medicine, it is called “bile disease”. The Classic of Internal Medicine believes that mouth bitterness is closely related to bile, for example, in Su Wen – Fistula, there is “If liver qi is hot, bile leaks out and mouth is bitter”; in Ling Shu – Qi of the Four Seasons, there is “If bile leaks out, mouth is bitter”; in Ling Shu – Theory of Distension, there is ” The “Spiritual Pivot – Theory of Distension” has ” the pain under the ribs and distension in the mouth is bitter and good at tai-hui”; it is also said that “those with bile disease are good at tai-hui, and the mouth is bitter and vomit the juice from the night”; the “Su Wen – Theory of Strange Diseases” also proposed for the first time that bile deficiency would lead to bitterness in the mouth, such as “this person, the number of plans and considerations is not decided, so the bile deficiency gas overflows and the mouth is bitter”. Later medical practitioners also further discussed this, such as “Sheng Ji General Record – Bile” said: “The theory said that the foot Shao Yang deficiency, bile deficiency. The deficiency is cold, cold is its disease fear, can not sleep alone, mouth bitter good tai breath, vomit the juice …… cover bile deficiency is not guarded by the spirit, its gas overflow, follow its location and sickness”. Treatment of Yang deficiency mouth bitterness For Yang deficiency mouth bitterness, Yu often treats it with ginger and gui, etc. If it is considered that Shaoyang is stagnated by cold and dampness, Gui Zhi combined with Er Chen Tang or Ling Gui Zhu Gan Tang with addition and reduction; if there is no obvious heat, the formula can be used without Yin medicine such as Scutellaria baicalensis, etc. After Yang medicine is used to dispel the stagnation, the mouth bitterness will disappear naturally; if it is considered that Kan Yang is deficient and true Yang is floating upward, heat evidence appears, then it is necessary to add Radix Aconiti, and if it is worse, Si Wei Tang is used. If it is considered to be a deficiency of kan yang and the true yang floating upward, then it is necessary to add shen zi, or even to use si wei tang to induce yang to return to the shed.