In five-year-old children with internal strabismus to see things, there will be double vision in the early stage, and the double vision will usually disappear after the eyes tolerate it, but it is still recommended to go to the hospital for corrective treatment in time. Strabismus is the inability of both eyes to look at a target at the same time, mostly due to the fact that when one eye is looking at something, the other eye becomes skewed. The images seen by the two eyes cannot be blended together, and therefore, double vision occurs. It is mainly caused by congenital dysplasia, neuromuscular pathology, and trauma. Treatment of strabismus in children should begin as soon as the diagnosis is confirmed. If there is a combination of refractive errors, such as hyperopia, the first thing to do is to wear glasses to correct it. Surgical treatment of strabismus is mainly based on the cause of the patient’s strabismus, the direction and angle of strabismus examination results, etc., part of the need for surgery to complete the purpose of strabismus correction. After surgery, patients should keep the dressing clean and dry, and try to avoid water when washing. Food should be light, nutritional choice of vitamin-rich, nutrient-rich diet, such as vegetables, fruits and so on.