Gynecology and obstetrics are both part of obstetrics and gynecology, and are two different departments within obstetrics and gynecology. The main difference is that the diseases diagnosed and treated are different. Gynecology focuses on genital diseases and treatment, while obstetrics focuses on pregnancy examination and treatment. 1. Gynecology: Gynecology is a branch of obstetrics and gynecology, and is a specialized department that focuses on the treatment of female gynecological diseases, including female reproductive system diseases, such as gynecological inflammation, abortion, sexually transmitted diseases, menstrual irregularities, infertility, gynecological plastic surgery, gynecological tumors, and each category has several small 2. Obstetrics and Gynecology: The main research is on the etiology, pathology, diagnosis and prevention of female reproductive organ diseases, as well as the physiological and pathological changes of pregnancy and childbirth, prevention and treatment of high-risk pregnancies and difficult deliveries, female reproductive endocrinology, family planning and women’s health care. Pregnancy includes miscarriage, ectopic pregnancy, preterm labor, placenta praevia, premature rupture of membranes, amniotic fluid embolism, uterine rupture, and puerperal infection. Pregnancy comorbidities include hypertension, diabetes, heart disease, viral hepatitis, etc.