A four year old child with strabismus needs to go to the hospital as soon as possible for professional treatment, which may include lens wear, strabismus training, or surgery. First of all, confirm whether the strabismus is refractive or non-refractive, and then choose the appropriate treatment method according to the specific situation. If it is not particularly serious, you can take conservative treatment to correct it. You can wear glasses to correct mild strabismus, have regular checkups and insist on wearing glasses around the clock, or consider strabismus training, but if it is particularly serious, you need to go to the hospital as soon as possible to have surgical treatment. Supervise your child’s normal routine, don’t eat spicy food, try not to touch electronic products, and eat more nutritious food rich in vitamins to intervene in strabismus as early as possible. If strabismus is too severe, it is important to seek specialized treatment as soon as possible, and to take steps to avoid the risk of strabismus.