When a woman undergoes IVF transplant surgical treatment, aspirin is usually taken one week prior to the procedure and needs to be continued until the seventh week of pregnancy before it can be discontinued. The purpose of taking aspirin is to promote blood circulation in the uterus during the IVF procedure. At the same time, it helps the embryo to grow and develop. The specific dosage and the frequency of taking aspirin need to be guided by a specialist, and there are some individual differences, which need to be determined according to the specific needs of the condition. Common adverse effects of aspirin include indigestion, stomach upset, abdominal discomfort, bleeding gums and hemolytic anemia, etc. It is contraindicated for those who are allergic to aspirin or salicylic acid. In addition, the use of aspirin has certain risks, need to be taken under the guidance of a doctor, do not take on their own.