Three-month-old babies with high muscle tone should go to the hospital for comprehensive rehabilitation treatment in a timely manner, and at the same time to take home rehabilitation, such as keeping the baby in the holding position, to make the baby face outward, so that the upper and lower limbs of the body in a flexed state. In the supine position, the baby can be laid in a soft hammock, the baby can be in a flexed state, to inhibit the body jerking, head and back muscle tone increased abnormal posture. Most of the increased muscle tone is caused by brain injury, such as the presence of premature babies, low birth weight babies, hypoxic-ischemic encephalopathy, nuclear jaundice, etc. It is best to carry out comprehensive rehabilitation in a timely manner, because the younger the age, the better the rehabilitation effect.