1. If you are planning to get pregnant, it is recommended that you take oral folic acid, 0.4mg once a day, 3 months before pregnancy. 2.Prenatal diagnosis outpatient clinic visit, do the basic pre-pregnancy examination. 3.After early pregnancy, if the menstrual cycle is 28-30 days, you can have an ultrasound examination at the outpatient clinic after 7 weeks to determine the early pregnancy, and at the same time, you can have an early pregnancy laboratory examination and a community-based booklet for maternity insurance and other matters. If there is bleeding or abdominal pain during early pregnancy, without early pregnancy ultrasound to confirm the end of the intrauterine pregnancy, one is cautious of ectopic pregnancy, and one is the possibility of preterm miscarriage. Go to the emergency room anytime you have bleeding or abdominal pain. If the menstrual cycle is irregular, check the menstrual cycle according to the ultrasound of the first appearance of fetal buds and fetal heart. 4. Starting from the first day of the last menstrual period, between 11 weeks – 13 weeks + 6 days of pregnancy, NT screening and blood HCG and PAPP-A tests are required to screen for trisomy 21 and trisomy 18. It is also commonly referred to as Down screening. If the menstrual cycle is prolonged or irregular, the period will need to be rechecked with an early pregnancy ultrasound. The subsequent tests will be completed according to the checked menstrual cycle. 5. If the risk of Down’s syndrome is high, further amniocentesis is needed to see if there is any chromosomal abnormality. If the current pregnancy is the second child, the first t-fetus has congenital heart disease or chromosomal abnormalities, you can early pregnancy ultrasound out of 8-10 weeks for chorionic villus biopsy. 23-28 weeks for four-dimensional ultrasound, to rule out malformation. 6. the first child, and the Down’s syndrome low risk, four-dimensional is not mandatory, you can in about 24 weeks for a malformation screening. Generally three-dimensional ultrasound can be. 7. 24-28 weeks of pregnancy, you need to go to the emergency room to make an appointment for OGTT, which is screening for gestational diabetes. Need to fasting, warm water, 75g of glucose powder, blood drawn three times, the latest indicators for fasting 5, 1 mmol / L or less, 1 hour 10, 0 mmol / L or less, 2 hours 8, 5 mmol / L or less is normal, any one of the higher than normal, the diagnosis of gestational diabetes mellitus, the need for outpatient counseling notes and treatment. 8.After 28 weeks, you need to have an obstetric examination once every 2 weeks. 9, 32-34 weeks, you should check the blood and urine routine, and ultrasound, to see whether the amniotic fluid and the size of the child is consistent with the gestational week. 10. After 36 weeks, you should have a labor checkup once a week. Each labor checkup includes blood pressure, weight, uterine height, abdominal circumference, fetal heart rate, etc. You should also have a NST (fetal heart rate) checkup each time. There is also a 20-minute NST (Fetal Heart Monitor) each time, which is very important, and if there is any abnormality in any of the items, then another treatment will be done. 11, there is a final ultrasound examination before delivery, comprehensive look at the condition of the fetus, there is no contraindication to normal delivery. 12.If you want to have a normal delivery, you need to check the pelvis after full term, assess the size of the fetus, fetal position and other conditions, and take a comprehensive view. 13, generally 16-20 weeks of pregnancy, according to the individual abdominal wall fat thickness and sensitivity, there may be differences in the appearance of early and late fetal movement. Throughout the pregnancy, from the appearance of fetal movement, especially after 28 weeks or the umbilical cord around the neck, need to count the fetal movement, can reflect whether there is fetal hypoxia, abnormal follow-up. 14, the whole pregnancy can be oral multivitamins, is conducive to fetal eugenics, calcium tablets can be supplemented in the emergence of leg cramps or after 5 months. 15, the above is for normal pregnancy, if there are abnormalities, you can need to do other laboratory tests or ultrasound. 16.Wish all prospective parents a happy mood, wish all babies healthy.