Double chorionic twin sheep are shown in the womb as two fetuses in their own separate amniotic sacs with separate spaces separated by chorionic villi and amniotic membranes. Double chorionic twin sheep means that there are two amniotic sacs and two layers of chorionic villi, and there are two possibilities: dizygotic twin fetuses and monozygotic twin fetuses. Two separate embryos are in two separate amniotic sacs, the two fetuses have their own placentas or share one, and there are two layers of chorionic villi and two layers of amniotic membrane between them, which cannot come into contact with each other. The difference is that the fetuses of dizygotic twins are not genetically identical. Whereas monozygotic twins have the same genes. Multiple pregnancies should be strictly monitored in terms of maternal and fetal growth and development, and should be treated in a hospital as early as possible so that the doctor can formulate a personalized diagnosis and treatment plan.