It is normal for a three-month-old baby to be 63 centimeters tall and weigh 14 pounds. According to scientific research, three-month-old babies can grow about 12.5cm in height compared to their birth height, and their weight is about twice their birth weight, with a slight difference between male and female babies. The height of a three-month-old baby is 63 centimeters and the weight is 14 pounds, which is within the normal range. Parents are advised to take their babies to the child health department of the hospital regularly to complete physical examination and growth and development evaluation, and to draw their own growth curves according to the height and weight of their babies at different ages, so as to assess the growth and development of their babies. If the baby’s height and weight deviate significantly from the normal range, you can promptly identify the cause of the disease under the guidance of child health doctors, under the guidance of the doctor to be targeted intervention.