How many months an infant can raise his head without wobbling is related to the development of the child’s spine as well as the neuromuscular development of the neck, and he usually raises his head without wobbling around 2-4 months. Infants generally three months after birth, the upper part of the spine can be convex to the front, that is, the neck curvature appeared, the child at this time can lift the head without shaking, before lifting the head after the phenomenon of wobbling, generally related to the lack of strength of the neck muscles, generally can be trained through the movement, so that the baby’s muscle strength to enhance, will help to lift the head without wobbling. Infant head up there may be individual differences, but most of the head up in about four months can not shake, if the time is too late, may be abnormal, need to go to the hospital in a timely manner to improve the relevant examination to clarify the diagnosis, and comply with the doctor’s instructions for targeted treatment.