摘要Objective:To study the effect of Xiao Chaihu Tang combined with intravenous chemotherapy on tumor markers and immune function in patients with advanced breast cancer.Methods: 76 patients with advanced breast cancer treated in our hospital between May 2012 and November 2015 were collected and divided into the combined treatment group (n=34) who accepted Xiao Chaihu Tang combined with intravenous chemotherapy and the control group (n=42) who accepted intravenous chemotherapy alone according to different treatment, and the treatment cycle was 3 months for both groups. Before treatment and 3 months after treatment, ELISA method was used to detect serum levels of broad-spectrum tumor markers and breast cancer-specific tumor markers; flow cytometer was used to detect cellular immune function index levels, and turbidimetric immunoassay was used to detect humoral immune function index levels in peripheral blood.Results: Before treatment, differences in serum tumor marker levels as well as cellular immunity and humoral immunity index levels in peripheral blood were not statistically significant between two groups of patients (P>0.05); after 3 months of treatment, broad-spectrum tumor markers carcinoembryonic antigen (CEA), carbohydrate antigen 153 (CA153) and carbohydrate antigen 125 (CA125) levels in serum of combined treatment group were lower than those of control group, and breast cancer-specific tumor markers insulin-like growth factor-1 (IGF-1), midkine (MK), soluble E-cadherin (sEC) and thymidine kinase 1 (TK1) levels were lower than those of control group (P<0.05); CD3+ and CD4+ T lymphocyte levels as well as CD4+/CD8+ ratio in peripheral blood of combined treatment group were higher than those of control group while CD8+ T lymphocyte level was lower than that of control group, and immunoglobulin G (IgG), immunoglobulin A (IgA) and immunoglobulin M (IgM) levels in peripheral blood were higher than those of control group (P<0.05).Conclusions:Xiao Chaihu Tang combined with intravenous chemotherapy can decrease the severity of advanced breast cancer and optimize the body's immune function.