Abstract:【Objective】 To inquire the immune response after hysteroscopic surgeries. 【Methods】 72 patients were enrolled in our study and divided into four groups according to surgery procedure. White blood cell, neutrophil granulocyte, lymphocyte, C-reacting protein, immune globulin A, immune globulin M, immune globulin G, complement 3 and complement 4 were measured before and after operation. All data were analyzed by statistic system of SPSS 13.0, and 0.05 was defined as statistically significant for all of tests. 【Results】 After operation, all data, excluding complement 4, were significantly different (P <0.05). Neutrophil was significantly different between TCRA and TCRE (P <0.05). The other indexes had no differences in each group (P >0.05). 【Conclusion】 The immune function, either the humoral immune function or cellular immune function, was suppressed after operative hysteroscopy. Each type of operation had similar influence to immune system.