The reason why children’s eyes are red with yellow discharge after fever may be in the fever body resistance decreases so that the local infection of conjunctivitis performance. First of all, children’s fever may be systemic or upper respiratory tract infections, the above situation will lead to children’s body’s resistance to decline, which is prone to conjunctivitis of the eyes of the local infection of the inflammatory manifestations of the conjunctivitis will have conjunctival secretion increase will be manifested as children’s fever after the eye redness with yellow discharge and other related symptoms and signs. It is also possible that the inflammation of the conjunctival infection of the eye occurs first, and then the secondary infection of the whole body, thus appearing the whole body fever, early conjunctivitis may not have increased secretion and other characteristics of the performance. It is recommended that children with red eyes and yellow discharge after a fever should seek medical attention to clarify the diagnosis and take appropriate treatment.