The standard height of an 11-week-old girl is 146.6cm. From the surface height, girls can be observed if they are between 142.2-151.1cm, which is approximately normal and within 1 standard deviation up and down. If a girl’s height is lower than 142.2cm, she is short and needs to be paid attention to urgently. At the age of 11, girls have almost entered puberty and their mammary glands have started to develop, so if you want to clarify the child’s height and growth, you need to do an orthopantomogram of the left wrist, i.e., an examination of the bone age, based on the actual test results of the bone age. In combination with the child’s height, if the child belongs to the state of short, you need to pay attention to the child’s height urgently. Once entering puberty, there is a sudden increase in puberty, followed by height is in a downward and decreasing trend, the time of height growth, with the speed of height growth will be less and less, in order to avoid missing the best time, need to pay close attention.