Whether to operate or not to operate for intermittent exotropia and the specific surgical plan should be judged on a case-by-case basis. There is a tendency for intermittent exotropia to become constant, and most of them will eventually require surgery. Whether to operate or not to operate for intermittent strabismus depends on the angle of strabismus, control ability, fusion function and binocular vision status, etc. For mild cases with good control ability, low or no frequency of dominant strabismus, and good binocular vision, refractive error correction, trephination and orthoptic training can be chosen to control the cases. Intermittent exotropia is in between occult exotropia and constant exotropia, and most of them have a tendency to develop into constant exotropia. When the angle of exotropia is greater than 15 prism degrees after examination, and when there is serious disruption of binocular vision, such as binocular visual fusion, timely surgical correction is needed. It is recommended that intermittent strabismus should be examined regularly for visual acuity and binocular vision, and if it cannot be restored through training or if it progresses and worsens, it should be treated with surgery in a timely manner.