Objective To compare the effect of low-temperature plasma ablation and YAG laser treatment on persistent allergic rhinitis(PAR) after septoplasty and to seek adjunct surgical procedures to tackle PAR.Methods Follow-up was performed three years after randomized grouping on PAR patients ( Low-temperature plasma ablation group 127 cases and YAG laser group 1 18 cases).Visual Analog Scale (VAS) was used to evaluate symptoms,such as nasal congestion,running nose,sneezing,nasal itching,eye itching etc preoperatively and postoperatively in order to compare the treatment effectiveness and intergroup difference.Results The efficacy rate of Low-temperature plasma ablation group was 87.4％,and YAG laser group was 66.1％.The difference was statistically significant( x2 =15.74,P ＜ 0.01 ).The VAS scores for postoperative symptom relief in both groups were significantly different ( t =21.24,20.56,all P ＜ 0.0 1 ).Conclusion As an adjunct treatment approach,low-temperature plasma ablation was superior to YAG laser in the treatment of PAR with preferable safety.