Otoacoustic emission is a noninvasive method of testing inner ear function. OAE is susceptible to the influence of many different factors of which the principal ones are the changes taking place in the middle ear. In transiently evoked otoacoustic emission (TEOAE) we deal with double signal transmission through the middle ear. This means that the sound reaching the cochlea depends on the function of middle ear. In the case of secretion into the tympanic cavity, suppression of the high-frequency otoemission components results from the effect of the mass increasing in the middle ear. The purpose of the study was the evaluation of otoemission in children treated with adenotomy and myringotomy due to MEE. The OAE value was estimated during the first 24 hours post surgery. The results of OAE study were compared with the clinical data, the level of hearing loss and the type of middle ear secretion. The study confirmed the presence of OAE in the majority of the cases. The results of the study indicate the applied treatment was effective.