There are several causes of eye enlargement, the first one is hyperthyroidism causing protrusion of the thyroid gland, which can also be considered as an eye disease, this disease is related to hyperthyroidism, but sometimes it is not hyperthyroidism, sometimes hypothyroidism eye can also protrude, so we must check the triple A gong to see if there is any abnormality. Secondly, there is a swelling behind the eye that pushes the eye forward, but in this case the protruding eye will have different degrees of eye position changes, such as internal obliquity, external obliquity or strabismus in other directions, so CT examination is needed to see if there is a swelling after CT examination. Third, the protruding eyeball is congenital. Some people are born with a large eyelid lid, but the eyeball is forward, which is a congenital change, so it is not necessary to care about it and no special treatment is needed. If there is no exposure keratitis, no exposure conjunctivitis, no such disease, no special treatment is needed.