Liver injury is usually caused by liver diseases, drugs and various traumatic injuries, etc. The specific recovery time needs to be determined by the cause and severity of the disease. If the liver injury is caused by trauma, such as simple liver contusion, the recovery time is about 7-10 days without injury to large blood vessels and bile ducts; if accompanied by hemorrhage, biliary fistula, etc., the recovery time will be significantly longer, generally taking about 2-4 weeks; if the liver injury is more serious, sometimes it is necessary to surgically remove part of the liver, which requires about 2 months of recovery time after surgery. If the liver injury is caused by liver diseases such as cholecystitis and viral hepatitis, the liver function can gradually return to normal in about 2 weeks after removing the causative factors and active liver preservation treatment; if the degree of liver injury is more serious, the recovery time to normal will be relatively longer, taking about 3-6 months. If severe fatty liver or cirrhosis or liver cancer occurs, the regeneration and repair capacity of liver cells may be exceeded at this time, and the possibility of normalization of liver injury is very low. If symptoms such as itchy skin, loss of appetite and yellow sclera appear, it is recommended to promptly undergo relevant examinations in the liver disease department of the hospital and carry out symptomatic treatment after clear diagnosis to avoid delaying the disease.