Liver Yu is a kind of acupoint of the foot solar bladder meridian, and also a kind of dorsal acupoint, which is the location where the qi of the liver is infused in the dorsal and lumbar region, and it corresponds to the liver, so it is called Liver Yu. The positioning of this acupoint is 1.5 inches below the spinous process of the ninth thoracic vertebrae, and the main function of the acupoint is to dredge the liver and benefit the gallbladder, to clear the liver and tranquilize the mind and to make the eyes bright, because the Liver Yu corresponds to the qi of the liver, so it has its quality in the liver, and it is mainly used in the treatment of liver and gallbladder disorders such as distension of the thorax, chest and hypochondria, bitter mouth, jaundice, and dazzle, because it opens the orifice to the eyes to treat this kind of disease of dimming of vision, It is mainly used to treat liver and gallbladder diseases, such as distension and pain in the chest, bitter taste in the mouth, jaundice, and dizziness. At the same time, the liver hides the soul, the main excretion, people’s mental and emotional changes have a direct relationship with the liver, so this point is also commonly used in clinical practice to treat mental illness, such as epilepsy, epilepsy and other psychiatric disorders. If the patient has liver and gallbladder diseases, when pressing on this point, one can often feel an obvious pressure and pain point, which helps in the clinical diagnosis of such diseases.