Objective To report the clinical phenomenon and characterisation of torus hyperplasia occurring after adenoidectomy and/or tonsillectomy in children.Methods This study included 26 pediatric patients diagnosed with torus hyperplasia.Clinical data(age,gender,time of first operation,way of operation and allergic rhinitis or not)were reviewed and analyzed.Results Twenty-six children who had underwent adenoidectomy and/or tonsillectomy had recurred snoring symptom,and were diagnosed with TTH.There were 20 males and 6 females,of whom 92.3%underwent first adenoidectomy and/or tonsillectomy before 5 years of age;the interval of diagnosis of torus hyperplasia after the operation ranged from 3 to 45 months.Eight children underwent partial resection of torus hyperplasia,the interval of two operations ranged from 3 to 48 months,and 10 exhibited definite signs and symptoms of aller-gic rhinitis.Twenty-one children underwent adenoidectomy or adenoidectomy with partial tonsillectomy,and 5 underwent adenoid-ectomy with total tonsillectomy.Conclusion TTH is a rare complication after adenoidectomy,and tended to occur in those who un-derwent adenoidectomy before 5 years of age.TTH was associated with allergic rhinitis,anti-allergic therapy has a certain clinical effect,and low-temperature plasma surgery is useful for torus hyperplasia.Torus hyperplasia was more common in children undergo-ing adenoidectomy without tonsillectomy than in those undergoing adenoidectomy with tonsillectomy.