The head sleep deviation early can be corrected and rounded back, but miss the best time, it is very difficult to correct. 1. It can be corrected: within one and a half years old, the fontanel and the bone gap of the skull are still not closed, if the child is always inclined to one side during sleep, it may cause the head to sleep on the wrong side, which may cause cranial deformity. After early detection, it is necessary to change the sleeping position in time, so that this situation can be corrected. 2. Difficult to correct: If the skull bone joints have healed, even changing the sleeping position will not correct the shape of the skull. It can only be treated by surgery under the operation of a doctor. If early diagnosis and intervention, the child can be effectively corrected if he/she sleeps on the wrong side of the head. However, if the optimal time for intervention is missed, it is difficult to correct. Therefore, parents should pay close attention to the shape of their child’s head. If any abnormality is found, go to the hospital as soon as possible to solve the problem in time.