Children’s physical examination does not necessarily need to fasting, but if there are liver and kidney function and other biochemical tests or abdominal ultrasound and other aspects of the examination, it is necessary to fasting. Because each hospital’s requirements and check items are different, if you simply check the height, weight, blood routine, trace elements, etc., generally do not need to fasting, you can eat breakfast and then go to the physical examination. Some hospitals may check more items, including liver and kidney function, blood sugar and other biochemical tests and abdominal ultrasound, etc., these need to fasting, otherwise it may lead to errors in the test results. Children in the physical examination need to consult the doctor in advance, usually the doctor will explain, if it is fasting after doing a physical examination in a timely manner to supplement the diet.