The items of 17-week maternity checkup generally include general checkup, routine checkup or Down’s syndrome checkup, etc. The details are as follows: 1. General examination: checking blood pressure, weight, pulse or abdominal circumference, etc. Through the examination, you can understand the physical changes of the pregnant woman during pregnancy. 2. Routine examination: the examination items include ultrasound, blood routine, urine routine, electrocardiogram, liver and kidney function, blood sugar, syphilis spirochete antibody or thyroid function, etc. Through the examination, it can determine whether there is any abnormality in the body, and if there is any problem, it can be treated reasonably according to the specific situation. 3. Down’s syndrome screening: it is to take the vein blood of pregnant women to carry out the examination. 17 weeks of pregnancy belongs to the middle stage of pregnancy, and through the examination, it can detect whether there is a chance of the fetus suffering from Down’s syndrome or not. It is recommended that the test be conducted under the advice of a doctor according to one’s own situation, and the test should be conducted in a regular hospital to avoid adverse consequences. Usually, you should pay attention to rest, reasonable diet, pregnancy should be regular obstetric examination, if there is any discomfort, you should immediately seek medical attention.