Six and a half year old girls height and weight standard general average height of 109.7~119.6cm, weight of 17.3-22.9kg, in different stages of the child’s growth and development is not the same, there are also individual differences, height and weight standard can be used as a reference. The height and weight of a child is related to many factors, such as heredity, acquired nutrition, environment, etc. There will be differences, and the height and weight of each child will not be the same, so you can refer to the height and weight standards. Six and a half year old girls are usually 109.7~119.6cm in height and 17.3-22.9kg in weight. If it is in the normal range, there is no need to worry too much. If the difference is too much compared with the standard range, you need to go to the hospital for checkups to find out the cause and then intervene for treatment. It is recommended to ensure the child’s sleep, strengthen nutrition, and appropriate exercise.