Abstract】Objective To perform adenoidectomy by low-temperature plasma radiofrequency ablation and nasodynamic excision, respectively, to observe the operative time, bleeding volume and efficacy of the two surgical procedures, and to analyze the advantages and disadvantages of the two procedures. Methods A total of 75 cases of children with obstructive sleep apnea hypopnea syndrome (OSAHS) with enlarged tonsils and/or adenoids were collected from January 2008 to December 2011, of which 30 cases were treated with rhinodynamic adenoidectomy and 45 cases were treated with rhinodynamic adenoidectomy. The differences in operative time, bleeding and six-month postoperative outcome (OSA-18) were evaluated in both procedures. The difference between the nasal power cutting group and the plasma ablation group was not statistically significant, but the bleeding volume in the nasal power cutting group was significantly more than that in the plasma ablation group, and the difference was statistically significant (P<0.05), and both surgical approaches were effective in the treatment of obstructive sleep apnea hypoventilation syndrome in children. Conclusion Both procedures can improve the quality of life of children with satisfactory efficacy after surgery; nasal endoscopic plasma low-temperature radiofrequency ablation adenoidectomy has significantly less bleeding than nasal power cutting surgery and is worth promoting.