Inclusion Criteria:

1. Patients with liver malignant or benign disease distributed in a segment, lobe or
half liver, malignant tumor ≤5 cm, without rupture, bleeding, and liver metastases,
benign tumor ≤15cm.

2. Liver function > Child-pugh level B, no severe biliary cirrhosis, ICG ≤ 15%, the
residual liver volume and standard liver volume ratio ≥ 40%. The conditions of open
hepatectomy were achieved

3. Age: Between 18 to 70 years

4. Patients with regional stones distributed in a segment, lobe or half liver, combined
or not combined with extrahepatic biliary calculi, hepatic parenchymal atrophy or
fibrosis in the lesion region

5. Patients with good general condition, the conditions of open Anatomical Hepatectomy
were achieved

6. Other organ lesions and previous biliary tract operation is not the absolute
exclusion criteria

7. Written informed consent

Exclusion Criteria:

1. Patients with bad general condition or important organ lesions, liver resection could
not be tolerated

2. Age:Younger than 18 or more than 70 years old

3. Malignant tumor recurrence within one month postoperation

4. Combined with severe liver atrophy hypertrophy syndrome, hepatic portal transposition
or hilar biliary fibrosis / stenosis

5. Complicated case need to get emergency operation

6. Contraindication of laparoscopy: Combined with complicated acute cholangitis,
repeated biliary tract operation, heavy intra-abdominal adhesion, Trocar can not be
placed in. Artificial pneumoperitoneum could not be tolerated