The height standard for six and a half month old male babies is 64-73cm and weight 6.80-10.37kg, while the height standard for six month old female babies is 62.5-71.2m and weight 6.34-9.59kg, but there are individual differences. The height standard for male babies at 6 months of age is 64-73cm and weight is 6.80-10.37kg, while the height standard for female babies at 6 months of age is 62.5-71.2m and weight is 6.34-9.59kg, which are normal within this range. Children’s height and weight are affected by many factors such as heredity, and there are large individual differences. In addition, the growth of height and weight of babies is not equal to the speed of increase, the evaluation should be based on the individual baby’s own changes, and should not take the so-called “standard value” as the “absolute value” for evaluation. Parents are advised to pay attention to the height and weight of their babies, and to have their babies assessed by the pediatrician’s office on time, and to seek medical attention if there is any abnormality.