• Must have provided written informed consent

• Age 18-75 years;

• BMI 17-28 kg/m2

• Male or female with a diagnosis of PBC, by at least two of the following criteria:

‣ History of AP above ULN for at least six months;

⁃ Positive AMA titers (\>1/40 on immunofluorescence or M2 positive by enzyme linked immunosorbent assay (ELISA) or positive PBC-specific antinuclear antibodies;

⁃ Documented liver biopsy result consistent with PBC.

• Diagnosis of compensated cirrhosis, as demonstrated by the presence of ≥ 1 of the following 4 diagnostic factor

‣ The histology was consistent with the diagnosis of liver cirrhosi;

⁃ Endoscopy shows esophageal and gastric varices or ectopic varices of digestive tract, excluding non cirrhotic portal hypertension;

⁃ Ultrasound or CT and other imaging examinations indicate the characteristics of liver cirrhosis or portal hypertension, such as splenomegaly, portal vein ≥ 1.3 cm, or liver stiffness measured by transient elastography\>16.9 kPa;

⁃ Abnormal laboratory inspection indicators (2 out of 4): 1) PLT \< 100 × 109/L, and no other reason can be explained; 2) Serum albumin\<35 g/L, excluding malnutrition or kidney disease and other causes; 3) INR \> 1.3 or PT prolongation (stop thrombolytic or anticoagulant drugs for more than 7 days); 4) AST/PLT (APRI)\>2）

• Incomplete response to UDCA defined by ALP \> 1.67 x ULN

• Taking UDCA for at least 6 months (stable dose for ≥ 3 months) prior to Day 0