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Objective: To observe the effect of acupuncture on hyperleptinaemia and hyperinsulinemia for studying its underlying mechanism about anti-obesity and reducing blood lipid in obesity rats. Methods: A total of 80 SD rats were randomized into normal control, model, acupuncture and medication groups, with 20 cases in each group. Hypothalamic obesity model was established by subcutaneous injection of 15% sodium glutamate (0.2 mL/10 g body weight), once daily and continuously for 5 days. "Zusanli" (足三里 ST 36), "Sanyinjiao"(三阴交 SP 6), "Guanyuan"(关元 CV 4) and "Zhongwan"(中脘 CV 12) were punctured and stimulated electrically (100 Hz, dense-sparse waves, and a suitable strength inducing local muscular tremor) for 15 min, once daily. In medication group, rats were fed with Sibutramine 4 mg/kg, once daily. After 4 weeks treatment, Lees index was detected, and serum leptin and insulin contents were determined by radioimmunoassay (RIA). Results: Compared with normal control group, Lees index, serum leptin and insulin contents of model group increased significantly (P0.05). Conclusion: Acupuncture can effectively reduce Lees index, serum leptin and insulin contents in fasting obese rats, which may contribute to its effect in anti-obesity.