Several key points that you must know when preparing for pregnancy. When you are ready and the baby is about to be born, pregnancy is very particular. You need to go step by step, from deep to shallow. Good health is the first condition. Before pregnancy, both husband and wife should know their physical condition in detail, especially women. All physical examinations must be completed and physical problems corrected promptly, such as being overweight or underweight, irregular menstruation, etc., which will have adverse effects on pregnancy. The next step is to strengthen nutrition, especially the intake of protein, vitamins and fiber, so as to keep the body healthy and increase the chance of pregnancy. In addition, quit smoking, limit alcohol consumption, and eat less oil