Aspirin for pregnancy preparation works by inhibiting platelet aggregation and preventing fetal arrest. Aspirin has a wide range of effects and can relieve fever, bouts of pain, and anti-inflammation, and is an over-the-counter medicine for colds. Aspirin taken in the preparation stage is usually a small dose of aspirin enteric tablets, usually taken at night before bedtime, to prevent platelet aggregation, promote blood circulation, prevent blood clots and fetal arrest. Taking aspirin for pregnancy preparation needs to be taken according to your body and test results. During the preparation stage, you should regulate your health to the best condition, keep your menstruation regular, eat a light diet and take folic acid tablets to prevent fetal neural tube abnormalities. The male partner should stop smoking and drinking, don’t stay up late and don’t work too hard.