At the age of 9 years old, menstruation (menstruation), the bone age of 11 years old, this case of suppression injection is generally not useful. Menstruation at the age of 9 years old, bone age of 11 years old, means that the body’s sexual organs have basically developed and matured, the general requirement of girls in the ovarian function just started to develop growth hormone inhibition injection. After the child’s development is mature, the inhibitory injection is generally no longer meaningful, can be strengthened through the nutritional intake as well as urge the child to carry out physical exercise to promote growth. Suppressive injections, generally gonadotropin-releasing hormone analogs. Common adverse effects of suppressive injections include nausea, vomiting, fever, and high blood pressure, as well as weight gain, mood disorders, and visual abnormalities. The medication should be monitored once every six months and is contraindicated during pregnancy and breastfeeding. Suppressive injections carry certain risks and need to be applied under the guidance of a specialist.