Objective： To explore the short- term effect and adverse reactions of radiotherapy combined with hyperthermia in patients with local recurrence of pelvic malignancies. Methods： In January 2008 to October 2012, 56 cases of pelvic malignant tumor local recurrence were randomly treated by radiotherapy and radiothera- py plus external high frequency hyperthermia. Radiotherapy alofle group （28 cases） ： the conventional fractionat- ed radiotherapy, split dose： 2.0 Gy/d, 5 times/week, total dose of 60-- 70 Gy. Heat the HG- 2000 type of ex- tracorporeal high - frequency hyperthermia instrument, radiation to heat during 2 times/w, heat treatment time interval ≥ 72 h, with until the end of radiotherapy. Each hypertherrnia were performed within 1 hours prior to radiotherapy, hyperthermia temperature maintained at 40- 43 ℃, continuous heating time maintained for at least 40 minutes. Results： Radiotherapy alone group complete relief rate was 25 % （7/28）, Radiotherapy plus ex-ternal heat therapy group complete relief rate was 57.1% （15/28）, radiotherapy alone group, the total efficien- cy（full mitigation ＋ part of the mitigation）of 53.6 % （15/28）, Radiotherapy plus external heat therapy group the total efficiency of 85.7 % （24/28）; the difference between the two groups had statistical significance （P<0.05）. About adverse skin reactions, rectum reaction, bladder reaction, bone marrow suppression, radiotherapy alone group were 5 cases, 11 cases, 5 cases, 3 cases, respectively, radiotherapy plus hyperthermia group respec- tively were 3 cases, 10 cases, 4 cases, 3 cases. The difference was not statistically significant（P<0.05）. Con- clusion： Radiotherapy plus external heat therapy group complete remission rate the total efficiency is improved obviously, radiotherapy with high frequency hyperthermia in vitro for postoperative local recurrence of pelvic malignancies tumor regression was significantly superior to radiotherapy alone, In the case of radiation dose not reduce adverse reactions and without increase recently.