Obstetrics generally looks at problems related to pregnancy, but also includes preconception counseling, including genetic counseling. Common obstetric conditions include: preterm miscarriage, hypertensive disorders of pregnancy, gestational diabetes, amniotic fluid embolism, preterm labor, overdue pregnancy, obstructed labor, ectopic pregnancy, postpartum hemorrhage, postpartum depression, puerperal infection, uterine rupture, low amniotic fluid, excessive amniotic fluid, obstetric shock, premature rupture of membranes, intrauterine death, placenta praevia, placental abruption, intrahepatic cholestasis during pregnancy, severe pregnancy vomiting, fetal congenital malformations In addition, there are a number of hospitals with gynecology and obstetrics departments. In some hospitals, gynecology, obstetrics and family planning are not separated from each other and are collectively called obstetrics and gynecology. In hospitals with a fine division, obstetrics and gynecology focuses on pregnancy or postpartum diseases, commonly known as childbirth. In the third trimester, medical abortion or induced abortion is usually under the control of family planning; ectopic pregnancy is treated surgically or conservatively, and some hospitals are under the control of family planning, while some are under the control of gynecology. However, for induced abortion at a large gestational age, it is generally necessary to go to the obstetrics department. Therefore, there are many kinds of diseases in obstetrics, but mainly related to childbirth, i.e. pregnancy and puerperium.