Objective To study the changes of immune function and liver function in patients with primary biliary cirrhosis.Methods From March 2013 to March 2016 in our hospital patients with primary biliary cirrhosis 30 cases as the observation group.There were 17 patients with mild liver injury and 13 with severe hepatic dysfunction.And at the same time for the admission of 30 patients with other liver diseases in patients with liver disease as a group,30 cases underwent physical examination as healthy group were detected by flow cytometry in three groups of subjects of immunity comparison of three groups of cells,dendritic cell subsets in peripheral blood and liver function index.Results The CD4+ cells and CD8+ cells in the observation group were significantly higher than those in the healthy group(P＜0.05),while the CD11c+ cells,CD123+ cells and NK cells were significantly lower than those in the healthy group(P＜0.05).In the observation group,CD4+ cells,CD8+ cells,CD11c+ cells and CD123+ cells were significantly higher than those of other liver diseases but the NK cells were significantly lower than those of the other groups (P＜0.05).In healthy group,CD4+ cells,CD8+ cells,CD11c+ cells,CD123+ cells and NK cells were significantly higher than those of other liver disease group(P＜0.05) The CD4+,CD8+ and CD123+ cells in the liver injury group were significantly higher than those in the liver function damage group,while the CD11c+ and NK cells were significantly lower than those in the liver function group,and the difference was statistically significant(P＜0.05).The CD4+ and CD8+ cells in the AMA-M2 negative group were significantly lower than that in the AMA-M2 positive group,while those in CD123+,CD1 1c+ and NK cells were significantly higher than those in the AMA-M2 positive group,and the difference was statistically significant (P＜ 0.05).Conclusion The immune function of patients with primary biliary cirrhosis and liver function injury are associated with production of serum AMA-M2 antibodies,including CD11c+ and CD123+ or as the main factors influence the development of the disease and the AMA-M2 antibody.