Children with precocious puberty should undergo a pituitary gland examination, which may reveal symptoms in two aspects: 1. Imaging examination such as pituitary MRI, which might uncover tumors in the pituitary gland that could lead to precocious puberty. 2. Hormone level tests, mainly involving the secretion of hormones controlled by the hypothalamic-pituitary-gonadal axis. For example, the secretion of gonadotropin-releasing hormone, luteinizing hormone, and follicle-stimulating hormone can cause precocious puberty. Precocious puberty is a relatively common endocrine disorder in children. Generally, it can be diagnosed in girls before the age of eight and in boys before the age of nine if secondary sexual characteristics appear.