Liver Dredging (regulating the stagnation of liver qi) is a method belonging to Chinese medicine for treating illnesses, which briefly means dredging liver qi and relieving stagnant liver qi, and is mainly used for treating illnesses with liver qi stagnation (poor qi and blood transportation of the liver and depression of emotions and moods). According to Chinese medicine, the liver belongs to wood in the five elements, its nature likes to be organized, the liver is the main dredging (the liver has the function of dredging the qi of the whole body), that is to say, the liver has the physiological function of dredging and unimpeded qi of the whole body, so that the qi can be unimpeded without being stagnant, dispersed without being depressed, the liver qi has the physiological characteristics of the main ascending, the main active, and the main dispersing, and the emotional disaffection (emotional disaffectedness), the liver loses its organizedness, and the body of the liver loses its gentleness, which results in the transversal and depressions of the liver qi. Common manifestations of Liver-Qi stagnation include distension and pain in the two ribs, chest tightness, nausea and vomiting, loss of appetite, fullness in the epigastrium (abdomen), intestinal sounding and abdominal pain, etc. Women can see irregular menstruation, breast distension and pain, etc. Commonly used formulas for dispersing Liver-Qi stagnation include Chaihu Shuo Liver Dispensary, Liver Dispersal and Deprescription Soup and Echijiu Pill. If there is a need to use liver-qi condensation formula, it is recommended to consult a regular hospital and use it under the doctor’s guidance, rather than self-medication.