Endocrinology is an emerging discipline that only developed in the 20th century. The first international book on pediatric endocrinology was published in the 1960s (France). In 1965, under the leadership of Professor Yan Chun, our hospital established the first pediatric endocrine professional group and endocrine laboratory in China, and began clinical work in endocrine clinics and wards. Decades of clinical development have accumulated clinical work experience for several generations, making it one of the most solid and experienced pediatric endocrinology specialties in China, with the most formal diagnosis and treatment