Aspirin is generally not recommended for women in early pregnancy to avoid affecting the development of the fetus. Poor coagulation factor generally refers to poor coagulation factor activity, belonging to the performance of poor coagulation function. Aspirin belongs to the antipyretic and analgesic, non-steroidal anti-inflammatory drugs, anti-platelet aggregation drugs, has the effect of relieving pain, inhibiting thrombosis and so on. Usually in early pregnancy is not recommended to take aspirin, especially in the first trimester of pregnancy, this stage is the fetus is the golden time of development, fetal organs are growing and developing, especially the brain and nervous system. If a pregnant woman takes aspirin at this time, the drug may pass through the placental channels to reach the body of the fetus, thus affecting the growth and development of the fetus, and in serious cases, may lead to malformation. It is recommended that pregnant women strictly follow the doctor’s instructions to use medication, do not abuse the drug, to develop good habits in life, on time for the maternity examination, and so on.