Children without recurrent tonsillitis do not require tonsillectomy. Tonsils with recurrent infections that have become chronic lesions should be removed electively. Especially during the development of children, the lymphoid tissue proliferates and the tonsils increase in size, even blocking the airway so that the child has to open his mouth to breathe, so it is very easy to cause inflammation and become a breeding ground for Streptococcus haemolyticus, which is a hidden problem that causes acute nephritis and is also the reason for the persistence and recurrence of acute nephritis. Therefore, children with chronic tonsillitis, children with acute nephritis for more than 3 months or children with recurrent attacks should choose to have their tonsils removed electively, and the timing of surgery should be chosen when tonsillitis has been controlled and nephritis has been basically stabilized. High-dose penicillin should be applied for 2 weeks before and after surgery to prevent recurrence of nephritis due to active bacteria.