Abstract: Objective: To evaluate the effects of low temperature plasma radio-frequency ablation on obstructive sleep apnea hypopnea syndrome(OSAHS).Methods: Seventy-seven patients with mild,moderate and severe OSAHS were treated with low temperature plasma radio-frequency ablation at different levels.Results: All these cases were reevaluated by the end of postoperative period lasted for 6 months.Among them,mean apnea hypopnea lndex was decreased significantly and mean lowest oxygen saturation value was increased significantly postoperatively(P＜0.01 ).Total effective rates of mild,moderate and severe patients were 100.00%,96.55% and 95.45%, respectively.The difference of total effective rate was statistically significant(P＜0.01).Conclusions: Plasma radio-frequency ablation is the effective way to treat OSAHS,as the preferred surgical treatment for mild-to-moderate patients and the combined approach for complex syndromes.