To have a healthy baby, it is crucial to prepare for pregnancy. How to prepare for a good pregnancy? I. Health guidance 1. Try to avoid senior pregnancy, that is, the age of 35 years or older. 2.Rational nutrition, avoid over-nutrition, control weight, because overweight is affecting pregnancy. 3. Take 0.4-0.8mg/d of oral folic acid or a multivitamin containing folic acid in the first 3 months of pregnancy. If you have a genetic disease, you should go to the hospital for genetic counseling to see if it is suitable to have a baby; if you have a chronic disease, such as hypertension, you should control your blood pressure normally and be evaluated by an obstetrician or cardiologist to see if it is suitable to have a baby; if you have an infectious disease, you should cure it before having a baby. 5.Use medication reasonably and avoid using drugs that may affect the normal development of the fetus. 6.Avoid contact with toxic and harmful substances in the living or occupational environment, and avoid close contact with pets. 7.Change bad habits (such as smoking, alcoholism, drug abuse, etc.) and lifestyle: avoid high-intensity work, high-noise environment and domestic violence. 8.Maintain mental health, relieve mental stress, and prevent the occurrence of psychological problems during pregnancy and after delivery. 9. Choose exercise reasonably. Physical examination When preparing for pregnancy, you should go to the hospital for a comprehensive physical examination, such as blood pressure, weight, heart and lung auscultation, and routine gynecological examination. Routine blood test, urine test, blood group, liver and kidney function, blood sugar, hepatitis B surface antigen, syphilis antibody, AIDS antibody, thalassemia screening, cervical cytology, prenatal virus screening, vaginal discharge test, thyroid function test, blood lipid measurement, gynecological ultrasound, electrocardiogram and chest X-ray should be performed if conditions permit. If you are still not pregnant after 1 year of positive attempts as mentioned above, you need to visit a fertility clinic to find the cause and provide guidance or treatment, so that a good pregnancy will surely come.