Pediatric endocrinology mainly treats the following diseases: diabetes mellitus, mainly type 1 diabetes mellitus in children, but type 2 diabetes mellitus can also occur in a few children who are obese and have a family history of diabetes mellitus. Thyroid disorders can be combined with hyperthyroidism or hypothyroidism and other abnormalities of thyroid function, and thyroid nodules can also appear. Physical development abnormalities, such as excessive obesity or wasting, gigantism or dwarfism caused by excessive or excessive secretion of growth hormone by the pituitary gland, also belong to the child endocrinology department. Abnormal gonadal development, precocious and delayed sexual development, abnormal mammary gland development, abnormal secondary sex characteristics, abnormal sexual organ development, etc. all require consultation in pediatric endocrinology.