The present invention discloses a completely laparoscopic staged hepatectomy using round-the-liver ligation, which is carried out as follows: (1) a complete laparoscopic operation is performed with general anesthesia using round-the-liver ligation, the branches of the portal vein of the hemiliver to be removed are ligated, meanwhile a tourniquet is used to tighten the connecting part between the right and the left hemilivers to block the communicating blood flow between the hemiliver to be removed and the hemiliver to be reserved, a drainage tube is put into the peritoneal cavity at the hepatic hilus, then close the peritoneal cavity, and the operation is completed； (2) the patient gradually resumes eating after the first operation, and recuperate for 6-15 days to make the volume of the hemiliver to be reserved increase to the expected volume of the future liver remnant, in which the expected volume of the future liver remnant should be at least 30-40% of the standard liver volume； (3) after the volume of the hemiliver to be reserved has increased to the expected volume of the future liver remnant, a complete laparoscopic liver resection is carried out with general anesthesia to remove the diseased hemiliver, and then the patient is nursed to be completely recovered.
