Background: The effects of adenoid hypertrophy on the nasal airway obstruction is a well documented entity among otolaryngologist but the effects of adenoid hyperplasia on the middle ear, has long remained a challenging subject. Aim: To assess the middle ear function in children with adenoid hypertrophy pre–operatively and post operatively after adenotonsillectomy. Materials And Methods: This prospective study involves children reporting to the Department of ENT at CSSH, SVSU, Meerut. A total of 50 cases of clinically and radiologically diagnosed adenoid hypertrophy were studied and subjected to Adenotonsillectomy and changes in middle ear function and hearing were noted by tympanometry and pure tone audiometry (PTA) pre operatively and at six weeks follow up post operatively. Results: Our present study showed significant improvement in the type of graph, pressure, compliance and Air–Bone gap implying conductive hearing gain. Conclusion: Adenotonsillectomy has a positive effect on middle ear function. Six weeks postoperatively as healing occurs, inflammation & oedema resolve and middle ear function improves significantly.