Whether it is normal to be only five years old but have a bone age of six years old needs to be decided in conjunction with the patient’s current physical condition, and it is abnormal if the body has some characteristics of precocious maturity, such as pubic hair, breast development, and laryngeal nodes, etc. The bone age itself is not 100% accurate after the test, so simply relying on the bone age display cannot represent a special meaning. Bone age itself after the test, the numerical accuracy can not reach 100%, so purely rely on the bone age of the pre-display, can not represent the special significance, you can observe the patient whether there are other physical characteristics, such as pubic hair, laryngeal nodes, breast development, etc., if the physical characteristics have obvious appearances, it may be the case of precocious puberty, you need to use medication under the guidance of the doctor to inhibit. Whether a child’s growth and development is normal or not needs to be evaluated by a professional doctor and then decided. In addition, more attention should be paid to let the patient more appropriate sports, do not take too much health care products, to avoid damage to the growth and development of children.