Background: Tonsillectomy is a widespread surgical procedure performed in children. Complete tonsillectomy has always been done in obstructive sleep apnea syndrome due to tonsillar hypertrophy. Several modifications of tonsillectomy procedures have been done along time concerning technique and instrumentation to reduce morbidity and get better outcome. Aim of the work: Make general comparison between extra capsular tonsillectomy (ECT) and microdebrider intra capsular tonsillectomy (MICT) regarding the intraoperative findings (blood loss and intra-operative time) and early postoperative complications (pain, post-operative bleeding, otalgia, days to return to normal diet and post-operative fever). Patients and Methods: This prospectively controlled study carried out on 64 children with chronic hypertrophic tonsillitis at who presented to the Outpatients Clinic of the Otorhinolaryngology Head and Neck Departments, Faculty of Medicine, Zagazig University Hospital during the period from July 2018 to July 2019. all patients were divided into 2 groups; Group I: included 32 patients were operated by extra capsular tonsillectomy (ECT). Group II: included 32 patients were operated by microdebrider intracapsular tonsillectomy (MICT). Results: There was statistical significant difference between the two studied groups regarding postoperative day's relief of SDB, postoperative otalgia, but there was no statistically significant difference regarding post-operative hemorrhage and fever. Conclusion: Microdebrider intracapsular tonsillectomy (MICT) is a safe and effective technique of tonsillectomy for children tonsillitis and sleep apnea as it effectively reduce the operative time, less postoperative pain and rapid return to normal diet apart of high intraoperative blood loss.