Scientific preparation for pregnancy is one of the important measures to reduce birth defects. How to prepare for pregnancy scientifically requires the following points: 1. Prepare for pregnancy Naturally, it is important to prepare and plan for pregnancy to avoid unwanted pregnancies. When you shouldn’t get pregnant or can’t get pregnant, do a good job of contraception; after you’re ready to get pregnant, then go ahead and get pregnant with confidence and boldness. 2, pay attention to nutrition Pay attention to nutrition, a balanced diet, control the amount of food, not picky, not partial food, control the weight in the normal range. 3.Supplementation of folic acid Folic acid has the effect of preventing neural tube defects and needs to be supplemented from 3 months before conception until 3 months after conception. Supplementation of folic acid 0.4 to 0.8mg per day, or multivitamin containing folic acid. Pregnant women who have previously conceived or given birth to neural tube defects need to supplement folic acid 4mg per day. 4.Rational use of medication If you have entered the state of pregnancy preparation, you should avoid the use of drugs that may affect the normal development of the fetus, any disease that requires medication, before the doctor prescribes medication, remember to say to the doctor that you are in the state of contraception. 5.Avoid contact with toxic and harmful substances You should avoid contact with toxic or harmful substances, such as radiation, high temperature, lead, mercury, benzene, arsenic, pesticides, etc. If you have pets at home, you should avoid close contact with them. 6. Quit smoking and drinking Alcohol and tobacco are definitely more harmful than beneficial to the human body, let alone to a small child that has not yet been born, so you should quit smoking and drinking to prepare for pregnancy. 7, avoid staying up all night Both men and women, especially women, should avoid staying up all night during pregnancy preparation, otherwise it will lead to endocrine disruption, which will affect the quality of sperm and eggs. 8, proper exercise Proper exercise to enhance physical fitness. 9. Maintain mental health Mental health is also very important during pregnancy preparation. Of course, the mental health here is not relative to “psychological problems”, but refers to a positive psychological state. For example, too much psychological stress, too many worries in life and work, and thinking about everything are not conducive to psychological health. 10, perfect pre-conception checkups Pre-conception checkups refer to some tests done before pregnancy, and these tests must be a series of relevant tests prescribed by professional obstetricians and gynecologists according to the specific situation of women preparing for pregnancy, not a regular medical checkup.