Prevention of exotropia a sign should start from infancy and parents should pay attention to carefully observe the development and changes of the child’s eyes. When infants and toddlers have fever, rash, or weaning, parents should strengthen care and often pay attention to the coordinated function of both eyes and observe any abnormalities in eye position. 1. Frequent attention should be paid to the child’s eye hygiene or eye hygiene situation. For example, lighting should be appropriate, not too strong or too weak, printing pictures with clear handwriting, do not lie down to read books, do not watch TV and play video games and computers for a long time, do not look at 3D pictures, etc. 2. For children with a family history of strabismus, even though there is no strabismus in appearance, it is necessary to ask an ophthalmologist to examine them at the age of 2 weeks to see if there is farsightedness or astigmatism. 3. When children watch TV, in addition to maintaining a certain distance, children should not be allowed to sit in the same position every time, especially in the position of the oblique to the TV. Should be exchanged from time to time left in the right seat, otherwise the child in order to watch TV, the eye always look in one direction, the head will also be habitually crooked to one side, over time, the development and tension of the six eye muscles are not the same, lost the role of the original regulation of balance, one side of the muscle is always in a state of tension, the other side is relaxed, it will cause strabismus. 4, when the prevention of newborns. Pay attention to the position of the baby’s head and don’t make it favor to one side for a long time. Children are more sensitive to the red reaction, so you can hang a red toy with a loud sound above the crib, shaking regularly, so that the combination of hearing and vision is conducive to the coordination of the newborn’s bilateral eye muscle action training, thus playing a role in preventing strabismus.