Objective: To investigate the expression of TNF-a and NF-kB in the uterus of chronic pelvic inflammatory disease (CPID) model rats. Methods: 40 female rats that adaptive fed for 5 days were randomly divided into normal group, model group, high dose group, medium dose group and low dose group. In addition to the normal group, the rats in each group were made chronic pelvic inflammatory model by mechanical injury combined with implantation of bacteria. The rats in each group were administrated by gavage for 20 days. After the last administration, the level of TNF-a and NF-kB in serum was measured by ELASA method. Results: (1) after the establishment of the model, the uterus of the chronic pelvic inflammatory model rats showed the pathological damage of chronic inflammation; the levels of TNF-a and NF-kB in serum were higher than those in the normal group, the difference was statistically significant (P<0.05). (2) After the drug intervention, the uterine tissue morphology of the rats in the Zhuang Yi Liu Fang Teng Fang Group was basically restored to normal, with only a small amount of inflammatory cell infiltration and other pathological changes; compared with the rats in the model group, the TNF-a in serum of the rats in each treatment group was lower, the difference was statistically significant (P<0.05). The expression of NF-kB in serum of each treatment group was lower than that of the model group (P<0.05). Conclusion: Zhuang Yi Liu Teng Fang can effectively improve the endometrial histomorphology of CPID model rats, and regulate the levels of TNF-a and NF-kB in the uterus of chronic pelvic inflammatory model rats.