On the basis of previous studies, this study intends to explore the effect of BIFICO on liver function recovery of patients with hepatocellular carcinoma (HCC) after surgery, so as to provide a new method for accelerating liver function recovery of HCC patients during perioperative period. This project is an open, randomized, blank-controlled clinical study. Liver resection patients were randomly divided into two groups, one group received continuous administration of BIFICO during perioperative period, and the dosage was controlled according to the instructions. The other group was a blank control. Stool samples were collected at three time points (before medication, before and after surgery) in two groups. Statistical analysis was performed to compare the differences of postoperative liver function and preoperative and postoperative gut microbiota between the two groups. Through this study, the investigators aimed to verify the beneficial changes of intestinal microflora in HCC patients with BIFICO during perioperative period .