Partial hepatectomy (PH) is widely used and the preferred method for the surgical treatment of hepatocellular carcinoma,and liver regeneration is directly related to the prognosis of the patients after the operation.Therefore,the specific mechanism and cytokines related to liver regeneration have become a hot topic in recent years.Currently,there is a wide variation of reported gene expressions and signal transduction pathways in the literature,but the mechanism and interactions are still unclear,especially for postoperative liver regeneration with hepatitis or cirrhosis.This review summarizes current research on the liver regeneration process,the mechanism of liver regeneration after partial hepatectomy,and the different mechanisms of hepatocirrhosis.