With the increasing number of people with diabetes and the increasing number of years of diabetes, various acute and chronic complications often occur, which is the main reason why diabetes is dangerous to human health. Therefore, it is important to have regular checkups for diabetes, which mainly include laboratory tests and ultrasound and other instrument-based tests. Laboratory tests include blood tests such as fasting blood glucose, two-hour postprandial blood glucose, glycosylated hemoglobin, routine blood tests, liver and kidney functions, lipid analysis, electrolytes and so on. In addition, there are routine urine and stool tests as well as urine microalbumin and 24-hour urine protein quantification. Ultrasound examinations include ultrasound of the liver, gallbladder, pancreas and spleen to clarify whether there is any damage to organ function, and ultrasound of the carotid artery and lower limb vascular arteries to clarify whether there is any formation of vascular atherosclerosis. Cardiac ultrasound examinations are mainly to clarify the presence of heart damage. The cranial CT or cranial MRI examinations are mainly to clarify whether there are cerebrovascular accidents, and the neurological examinations, diabetic foot screening, and fundus examination are to check the complications of target organs that are endangered by long-term high blood sugar. Therefore, there are a lot of related things that need to be checked for diabetes, including all parts of the body, because high blood sugar can harm all parts of the body, and the main purpose of diabetes examination is to detect complications early, treat them early, and slow down the progress of complications.