The effects of coagulation disorders on pregnancy are as follows. 1. Before pregnancy: Patients with coagulation disorders are usually not recommended to get pregnant. Patients should first complete the relevant examinations to clarify the causes of coagulation disorders. Some diseases such as severe liver disease and coagulation factor deficiency may cause infertility. 2. When pregnant: coagulation dysfunction will affect local microvascular blood flow and cause abnormal coagulation function. After pregnancy, women may experience adverse pregnancy outcomes such as spontaneous abortion, fetal growth restriction and intrauterine fetal death. 3. During delivery: coagulation dysfunction may cause hemorrhage during delivery, leading to hemorrhagic shock, which seriously affects the safety of maternal life. Women with coagulation disorders should find out the cause of the disorder before getting pregnant, treat the disorder under doctor’s guidance, and get pregnant again after the coagulation function is normalized.