The advantages of quantitative adjustment strabismus correction for children’s extraocular muscles are: 1. The eye position can be adjusted by pulling the adjustment ring during the operation and within 1 to 3 days after the operation. 2.It is suitable for children with strabismus, especially for internal strabismus with easily changing oblique angle and more complicated vertical strabismus, as well as various extraocular muscle syndromes. 3.Compared with the traditional adjustment line, it is very convenient to adjust flexibly and freely because we use a suture threaded in the center of the muscle stop end and in a figure-of-eight shape with small needle spacing. 4.It can be used under various anesthesia states. 5.Easy to operate, safe and reliable. 6.The adjustment suture is located on the surface of the bulbous conjunctiva, no longer exposing the scleral tissue. 7.Adopting modified PARK conjunctival incision, the conjunctival incision is flat and has good appearance after surgery. 8.The No.6 absorbable suture from Johnson & Johnson, USA is used to fix the muscle, which is smooth, less damaged and can be absorbed by itself. When adjusting the muscle surgical volume after surgery, it should be noted that: 1. The adjustment of undercorrection is more difficult than the adjustment of overcorrection, and should be carried out within 1-3 days after surgery. 2.Adjustment should be done gently so as not to pull the threads off and cause the muscle to slip out. 3.The adjustment volume should be carried out in small to large steps. 4.Check the child’s eye position before adjusting the amount of strabismus surgery, and adjust the amount of strabismus surgery after local drops of epi-anesthetic. The application of quantitative adjustment of strabismus correction for children’s extraocular muscles has significantly increased the one-time success rate of strabismus surgery.