Since growth and development are affected by a variety of complex factors, the etiology of short stature is very complicated. Once you find out that your child is short in stature, you should go to the pediatric department of a regular hospital for examination. You should tell your doctor about your pregnancy history, birth history, past history, growth rate, diet, sleep, exercise, family environment, etc. Your doctor should take a detailed medical history to fully understand the relevant information in order to make a timely and accurate diagnosis, and then consider how to treat your child. Generally, we should ask about age and past growth rate, measure height and weight, make comparison through height chart, and do the following tests as needed. 1. thyroid function measurement, including T3, T4, TSH. if there is hypothyroidism should be given to correct, after correcting the thyroid function height will catch up. 2. Bone age X-ray of the left hand (including the wrist joint) to determine the difference between natural age and physiological age against the bone age chart, so as to better determine the degree of bone maturity in the body. 3. Growth hormone stimulation test, generally divided into drug stimulation and exercise stimulation test, to detect the level of growth hormone secretion. The drug excitation test has a high accuracy rate. 4. CT of the saddle area of the head or pituitary MRI Mainly to exclude pituitary pathology factors. Chromosomal karyotype and uterine ultrasound Some girls with short stature undergo this procedure to exclude congenital ovarian hypoplasia. 6. Other special tests related to dwarfism, such as sex hormone measurement, etc.