The height of a 4-week-old baby is 96cm, which is slightly short for a female baby and meets the criteria for dwarfism for a male baby. the standard height for a 4-week-old female baby is 103.1cm and the standard height for a 4-week-old male baby is 104.1cm. if the baby is short or slightly short, you need to clarify the reasons that cause the baby to be short: 1. whether the baby is short caused by genetic factors, whether the parents are short in height, and whether the parents Whether the baby is short caused by genetic factors. 2. Whether the child has a low immune function, is often affected by repeated respiratory infections or by diseases of the gastrointestinal tract, which affects the baby’s absorption of energy and affects the nutritional status, so it will appear short. 3. If the child is affected by congenital diseases, such as hypothyroidism or growth hormone deficiency, the child will be short in height. 4. If the child eats poorly or has a deficiency of trace elements, the child will also be short in height.