There is no objective instrument to measure whether an infant’s muscle tone is high or not, it is entirely based on the doctor’s experience and feeling. The manifestation of high muscle tone in infants is often that the child is easily irritated, cries continuously, is frightened by the sound after falling asleep, and has difficulty falling asleep when trying to sleep; when holding the baby vertically, he is used to tilting his head back and looking at the ceiling; if it is difficult to insert the arm into the sleeve when dressing, the arm stretches all the time; usually always holds the fist all the time and cannot open the fingers; when taking a bath, he cries, and his whole body is stiff when put in the water; when the baby walks, he crosses both feet walk forward, and when lying flat, keep moving and rubbing the two feet against each other. When examining the child, the legs are tense and straight. In particular, when a child stands, he or she first lands on the ground on the tips of the feet, and other children will slowly flatten them, while a child with high muscle tone will always stand like this and may not be able to flatten his or her feet even if he or she presses them with his or her hands. Also, if a four-month-old child stands on the belly of an adult, he or she will jump and laugh, but a child with high muscle tone will only stand straight up. The timely detection of high muscle tone, scientific and effective treatment, in order to maximize the baby, restore health. High muscle tone is mostly a sign of brain damage, and the earlier treatment is started, the better the recovery.