Obstetrics and gynecology is a department concerned with the study of women’s health as well as diseases throughout their lives. Obstetrics and gynecology is therefore an essential clinical discipline. Obstetrics and gynecology can be divided into obstetrics, gynecology and family planning departments. Obstetrics and gynecology is the study of the entire process of a woman’s pregnancy, delivery and post-delivery. Therefore, when patients have questions about the process of pregnancy, they can visit obstetrics and can receive pregnancy-related health information, as well as diagnosis and treatment about pregnancy-related diseases. Gynecology studies a wide range of problems, including inflammatory diseases of the female reproductive system, developmental abnormalities, tumors and female hormonal endocrine problems. Therefore, when patients have problems with the female reproductive system, they can be seen in the gynecology department. Family planning departments can provide patients with a range of services regarding fertility, including contraception and other related expertise, as well as practical guidance. Finally, obstetrics and gynecology is a separate department that includes both medical and surgical features and can provide not only pharmacological but also surgical treatments for diseases. To sum up, obstetrics and gynecology can provide all kinds of health services regarding female reproductive system. It is the best way to protect the health of women throughout their lives.