The common clinical manifestation of this type of baby is that most of them are between 4 months and 10 months old, and their heads are tilted to the affected side to varying degrees when they are sitting, and they prefer to look to the healthy side, but they are not limited in turning and lifting their heads to the affected side, but the degree of turning and lifting is slightly worse than that of the healthy side. On palpation, the sternocleidomastoid muscle on the affected side had no mass, no striated hardness like bone, no contracture and shortening, and the muscle tone was slightly lower than that on the healthy side. ultrasound showed no obvious abnormality of the sternocleidomastoid muscle on both sides, and the muscle texture was clear with uniform echogenicity. This kind of habitual squint is due to the baby’s insufficient strength of autonomous control of neck muscles during the process of neck muscle development, and the unbalanced development of muscle strength on both sides leads to head tilt, which is, to put it plainly, a problem of good force on one side and poor force on the other. Parents find this phenomenon can not rush to seek medical attention, at home more to guide the child to take the initiative to turn his head to the affected side, raise his head to look at an angle of 45 degrees, that is, the neck backwards to which side to see more. For example, if the baby’s neck looks short on the left side, his head falls to the left, his face faces to the right, and he likes to look at things on his right side, then parents should let the baby look more to the left and look at things on the upper left corner. Start with small things and always remember to correct your baby’s bias habit, at least ten times a day, so exercise for a month, and then go to the hospital if the situation does not improve. This way is for children who are diagnosed with habitual squint and need to exclude other causes of squint such as muscular squint, ophthalmic squint, bony squint and neurogenic squint.