The authors report the rusults of histopathological studies on human 100 palatine tonsils which were obtained post-operatively at Seoul Paik Hospital Inje Medical College by H-E staining method. We observed the alterations in the histopathologic findings related to age and clinical diagnosis of tonsillar disease : recurrent tonsillitis(RT) in 33 cases, hyperplastic tonsillitis(HT) in 44 cases and tonsillar hyperplasia(TH) in 23 cases. The results were : 1) In RT group, cellular infiltration in crypt epithelium and irregularity of crypt were more prominent. Otherwise the histologic findings of epithelia of the surface and crypt were similar in 3 groups each other. 2) Fibrosis and dense cellular infiltration in subepithelium of the surface and crypt were most common in RT group. But other histopathologic findings in both subepithelia had no differences in 3 groups. 3) Immature germinal centers were most frequently seen in TH group. 4) Hyperplasia of surface epithelium was increased in frequencies with age. Otherwise there were no differences of histopathologic findings in both epithelia in aging process. 5) Hemorrhage, fibrosis and dense cellular infiltration in crypt subepithelium were observed more frequently with age except for ulceration. But in surface subepithelium no differences were found in aging process. 6) The number of active germinal centers was increased with age but immature germinal centers were decreased in number.