Aspirin can be taken by pregnant women when they are suffering from anticardiolipin antibody syndrome, hypertensive disorders of pregnancy, rheumatoid arthritis and other diseases. 1. Anti-cardiolipin antibody syndrome: Anti-cardiolipin antibody syndrome is prone to cause blood clots in pregnant women, leading to miscarriage or infertility. Therefore, in the early stages of pregnancy, it is generally recommended to take oral aspirin in small doses under the guidance of a doctor. 2. Hypertensive disorders of pregnancy: For pregnant women with hypertensive disorders of pregnancy, in order to avoid high blood coagulation, thrombosis, causing pulmonary embolism, cerebral embolism and other conditions. Aspirin can be used under the guidance of a doctor. 3. Rheumatoid arthritis: Pregnant women suffering from rheumatoid arthritis and other immune system diseases can lead to symptoms of miscarriage. Aspirin can be taken under the guidance of a doctor. During pregnancy, pay attention to more rest, at the same time should relax, avoid tension, anxiety, pregnant women taking aspirin, should be used under the guidance of a doctor, there is any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.