Objective To determine the therapeutic effect of ursodeoxycholic acid capsules in patients with primary biliary cirrhosis.Methods Sixty patients of primary biliary cirrhosis were randomly divided into treatment group and control group.Liver protection and supportive treatment were given for the two groups.Ursodeoxycholic acid capsules (10mg/kg daily) was given for the treatment group (Usage and dosage: for 60kg Weight, two times a day, 1 grain in the morning and evening;for 80kg weight, three times a day, 1 grain in the morning, noon and evening;for 100kg weight, three times a day, 1 grain in the morning and noon, and 2 grains in the evening) .Ursodeoxycholic acid tablets (made in china) 8-10mg/Kg daily was given for the control group.The treatment duration was 26 weeks in both groups.Results Alanine aminotransferase (ALT) , γ-glutamyl transferase (GGT) and serum total bilirubin (TBIL) were significantly improved in the treatment group than the control group (P<0.01) .The skin itching and fatigue situations were also improved in treatment group than the control group (P<0.05) .Conclusion Compared with ursodeoxycholic acid tablets, ursodeoxycholic acid capsules can quickly and effectively reduce the skin itching and fatigue in primary biliary cirrhosis, and improve liver function indexes.