The length of a one-year-old girl is about 67.2~83.4cm and her weight is about 6.87~13.15kg. The height pattern of one-year-old girls is that the younger the age of the month, the faster the growth, if the length at birth is about 44.7~55cm, one year after birth, the length of the growth of about 25cm, so in the first year of age length of about 67.2~83.4cm, the fastest growth in the first three months, which is about the same as the growth of the last nine months. The weight of a one-year-old girl is similar to her height, and also grows faster the younger the age of the month. By the time a one-year-old girl is one year old, her weight is about three times as much as that at birth, which is 2.26~4.65kg at birth, and 6.87~13.15kg at the time of her first year of age. Her weight is affected by her diet and illnesses, and fluctuates greatly, so you can judge the growth and development of your child by the increase in her weight.