Objective To study the effect of Dahuang-Mudan decoctionby retention enemafor the thepatients with acute pelvic inflammation disease (APID) and toxic heat flourishing type. Methods Ninety patients with APID (toxic heat flourishing type) were randomly divided into treatment group and control group (45 case per group). The patients in both groups were given cefamandolenafate injection and tinidazole injection;and the Dahuang-Mudan decoction by retention enema was added to the treatment group.The C-reactive protein (CRP), tumor necrosis factor-α(TNF-α), interleukin-6 (IL-6) and clinical symptoms scores in both groups before treatment and after 2 weeks of treatment were observed. Results After treatment, CRP (3.16 ± 1.25 mg/L vs. 8.68 ± 1.45 mg/L, t=19.126), TNF-α(4.02 ± 1.06 ng/L vs. 9.64 ± 2.08 ng/L, t=15.966), IL-6 (60.34 ± 14.35 ng/L vs. 88.24 ± 12.16 ng/L, t=9.839), temperature recovery time (3.22 ± 1.13 d vs. 4.73 ± 1.36 d, t=5.638), abdominal pain disappeared time (5.26 ± 1.43 d vs. 7.45 ± 1.32 d, t=7.418), leukocyte recovery time (7.34 ± 2.06 d vs. 9.58 ± 2.26 d, t=4.834), hospital stay time (10.24 ± 3.42 d vs. 13.43 ± 4.38 d, t=3.791) in the treatment group were significantly lower than those in the control group (P<0.01). The clinical effect rate (77.27% vs. 48.84%, χ2=7.562) in the treatment group were significantly higher than that in the control group (P<0.01). Conclusions The treatment of APID (toxic heat flourishing type) with Dahuang-Mudan decoction by retention enema can reduce the inflammatory response of pelvic, promote the absorption of exudate and adhesion in pelvic.