For strabismus that occurs during childhood, the most appropriate time to perform surgery depends on the specific conditions of the child and cannot be rigidly defined. For congenital internal strabismus that occurs within the first 6 months of life, amblyopia treatment should be performed early, from one to one and a half years of age, when the child is more cooperative with the examination and the angle of the strabismus is measured, so that the two eyes can function in their respective positions. For acquired internal strabismus that appears after 6 months of life, fully adjusted internal strabismus can be completely corrected through dilated eye examinations and glasses, and does not require surgical treatment. For partially adjusted internal strabismus, at least half a year of dilated eye examinations and glasses correction is required. Surgery for exotropia can be performed a little later than congenital strabismus because of the relatively small impact on visual function, and should be decided specifically based on the patient’s fusion function, strabismus degree, and age. Surgery is required if there is a loss of monocular function in both eyes, an increase in the duration of ocular strabismus (greater than 50%), and symptoms of visual fatigue secondary to inadequate pooling function. In immature children, as long as the surgical correction of the eye position is satisfactory, early surgery is at least not worse than late surgery from the functional point of view. Some parents of children with strabismus are afraid of surgery for many reasons, which may deprive their children of the opportunity to heal functionally, so parents should respect the opinion of professional ophthalmologists and decide on the timing of surgery to obtain cosmetic and functional healing.