1. Physical examination Before pregnancy, women should undergo a comprehensive physical examination to ensure that they are in good health. This process includes gynecological examination, blood tests, electrocardiogram and other items. If there are any underlying health problems, they need to be treated promptly to reduce the impact on the fetus. 2. Nutritional intake Before pregnancy, you should pay attention to a balanced diet and adequate intake of nutrients. It is recommended to eat more fruits, vegetables, whole grains and protein sources.