What are the necessary tests to be done in pregnancy: First, 12 weeks of pregnancy to the hospital to build a file, before building a file to be done electrocardiogram, ultrasound, full blood and urine tests, these four tests are normal before the establishment of the file, and then it is every 4 weeks to carry out a routine checkups, listening to the fetal heart, measurement of the uterine height, abdominal circumference, routine blood and urine routine. Secondly, Down’s syndrome screening will be done on one of the days of 16-18 weeks. Third, 22-24 weeks for malformation screening and ultrasound. Diabetes screening after 26 weeks. After 28 weeks, 1 routine checkup every 2 weeks, and the doctor will measure the pelvis once after 28 weeks. Sixth, after 32 weeks and then 1 ultrasound, mainly to see the fetal amniotic fluid. Seven, 36 weeks to start checking once a week, to carry out fetal heart monitoring.