Abstract: Objective: To observe the clinical efficacy of Qingxian Tongluo Prescription in treating adenoid hypertrophy (AH) in children. Methods:A total of 80 children with AH admitted to the Department of Pediatrics of Xiaoshan Hospital Affiliated to Hangzhou Normal University from January 2023 to December 2024 were randomly divided into a control group and a study group using a random number table method,with 40 cases in each group. The control group received Montelukast Sodium Chewable Tablets, while the study group received Qingxian Tongluo Prescription. After 12 weeks of treatment,efficacy was evaluated. After exclusion,38 cases in the control group and 36 cases in the study group completed the study. Clinical efficacy, traditional Chinese medicine syndrome scores, lateral nasopharyngeal imaging indicators [adenoid thickness (A value),nasopharyngeal width (N value),A/N ratio], immune function (T lymphocyte subsets CD3⁺,CD4⁺,CD8⁺,CD4⁺/CD8⁺ ratio),and inflammatory factors [allergenspecific immunoglobulin E (sIgE), eosinophils (EOS), leukotriene C4 (LTC4)] were compared between the two groups before and after treatment. The incidence of adverse reactions during treatment was also recorded. Results: After 12 weeks of treatment and at the 12-month follow-up, the primary and secondary traditional Chinese medicine syndrome scores and total scores decreased in both groups compared to before treatment, with statistically significant differences (P<0.05). The study group had lower scores than the control group, with statistically significant differences (P<0.05). After 12 weeks of treatment, the A value, N value, and A/N ratio decreased in both groups compared to before treatment, with statistically significant differences (P<0.05). The study group had lower values than the control group,with statistically significant differences (P<0.05). After 12 weeks of treatment,the levels of CD3⁺,CD4⁺,and the CD4⁺/CD8⁺ ratio in the study group increased compared to before treatment and to the control group at the same time point, with statistically significant differences (P<0.05), while the CD8⁺ level decreased compared to before treatment and to the control group,with statistically significant differences (P<0.05). In the control group,there were no statistically significant differences in CD3⁺,CD4⁺,CD8⁺ levels,or CD4⁺/CD8⁺ ratio compared to before treatment( P>0.05). After 12 weeks of treatment,the levels of sIgE,EOS,and LTC4 decreased in both groups compared to before treatment (P<0.05),and the study group had lower levels than the control group (P<0.05). After 12 weeks of treatment,the total clinical efficacy rate was 94.44% (34/36) in the study group and 76.32% (29/38) in the control group,with a statistically significant difference between the two groups (P<0.05). The incidence of adverse reactions was 8.33% (3/36) in the study group and 28.95% (11/38) in the control group,with a statistically significant difference between the two groups (P<0.05). Conclusion: Qingxian Tongluo Prescription has a certain efficacy in treating AH in children. It effectively alleviates clinical symptoms,reduces adenoid size,improves immune function, alleviates inflammatory responses,and lowers the incidence of adverse reactions.