The causes of large tonsils in six-year-olds include congenital asymmetry of the tonsils on both sides, inflammation of the tonsils on one side and infection of the tonsils on both sides. 1. Congenital asymmetry of both tonsils: not all children’s tonsils are completely symmetrical and equal in size, and some children are born with large tonsils on one side and small tonsils on the other. If the child does not have any discomfort, there is no effect on daily voice, swallowing, is generally a physiological phenomenon. 2. Inflammation of one side of the tonsils: when a six-year-old child has inflammation of only one side of the tonsils, the affected side of the tonsils in the role of pathogenic microorganisms and inflammatory factors, capillary expansion and other phenomena can occur, thus swelling, enlargement, which can be manifested as a side of the tonsils large. 3. Both sides of the tonsil infection: even if the six-year-old child’s two sides of the tonsils at the same time by bacteria, viruses and other pathogens, both sides of the tonsils are swollen, hyperplasia and so on, but may be two sides of the tonsil enlargement of the situation is not the same, there will be a side of the phenomenon of the big side of the small. If a six-year-old child’s tonsils are large on one side, the parents should take the child to see a doctor in a timely manner, by a professional doctor to identify the cause of the implementation of symptomatic treatment.