To explore the effect of moxibustion treatment for limb lymphedema after mastectomy of breast cancer.Methods:One hundred and thirty cases of postoperative breast cancer patients were divided into treatment group and control group with 65 cases in each group. The treatment group adopted moxibustion therapy combined with breast function recovery exercises on the suffered side of limb, and the control group gave patients only functional recovery exercise on the suffered side of the limb. Recovery condition of limb function was compared between the two groups according to the therapeutic effect evaluation one month after the surgeries.Results:Moxibustion therapy and breast function recovery exercises used in treatment group showed definite effect in the treatment and prevention of limb edema, and it was significantly higher than that of the control group one month after surgeries (P<005). Recovery is obviously more satisfactory in treatment group.Conclusion:moxibustion therapy combined with breast function exercise has definite therapeutic effect in the treatment and prevention of postoperative breast cancer patients with limb edema, which can prevent and reduce the limb edema, and promote the rehabilitation of patients with breast cancer．