The most common cause of swollen tonsils in the throat is tonsillar hyperplasia and enlargement due to repeated inflammatory irritation of the tonsils. Because the tonsils are the most common immune organ for killing viruses as well as bacteria before puberty, their repeated irritation can lead to enlargement of the tonsils. Of course, there are also some cases where the tonsils look enlarged and abnormal because of mutations in the tonsils, such as the presence of tonsil cancer, tumors, or even papillomas. In this case, laryngoscopy is needed to make a clear diagnosis, and if benign or malignant is distinguished, it is also necessary to cut down and send it to pathology for a clear diagnosis.