It is well known that diabetic patients should monitor their fingertip blood glucose regularly, but monitoring blood glucose alone is not enough in order to prevent and delay the occurrence and development of complications. Poor blood glucose control in diabetic patients can lead to complications in many organs such as heart, brain, kidney, eye and nerve. Statistics show that about 80% of diabetic patients die from various complications of diabetes, which brings a heavy burden to patients, their families and society. In addition to frequent monitoring of finger blood glucose, diabetic patients should also undergo regular checkups of some indicators related to their condition in order to detect changes in time, adjust the treatment plan and delay the occurrence and development of diabetic complications as much as possible. 1. Check glycated hemoglobin (HbA1c) once every three months. Glycosylated hemoglobin is a combination of hemoglobin and sugar, and it has a very close relationship with the level of blood sugar. Glycosylated hemoglobin is an indicator of good or bad blood sugar control in the past 2-3 months. 2. Check biochemical indexes once a year. Biochemical indexes include: liver function, kidney function, blood lipid, uric acid, etc. The liver has a close relationship with sugar, fat and protein metabolism, and the glucose-lowering drugs taken by diabetic patients need to be metabolized in the liver. Diabetic patients are more prone to atherosclerosis than the general population, which is not only related to factors such as high blood sugar and high blood pressure, but also related to abnormal lipid metabolism, which can greatly increase the risk of cardiovascular disease in diabetic patients, so it is also important to test blood lipids and other indicators. 3. Check urine microalbumin or urine albumin creatinine ratio (ACR) once a year. Checking urine microalbumin can monitor the degree of kidney damage caused by diabetes and is an important indicator for early detection of diabetic nephropathy. If urine microalbumin or urine albumin creatinine ratio is elevated, urine protein-lowering medication and regular follow-up are required. 4. Check the fundus once a year. Diabetic retinopathy is an important cause of blindness and is the most serious complication of diabetic eye disease. With poor blood sugar control, diabetic retinopathy will gradually worsen and vision will gradually decline, so it is important to check the fundus regularly. Once fundus lesions occur, they should be treated promptly so that the progress of the disease will not be difficult to reverse. 5. Have an annual examination related to cardiovascular, cerebrovascular and limb arteries. Such as electrocardiogram, vascular ultrasound and other examinations. Heart attack and cerebral infarction usually attract the attention of diabetic patients because of their poor prognosis, so most of them will be seen regularly in cardiology and neurology. However, diabetic foot is often not detected early because of its insidious onset, and it is only after the foot has broken that attention is drawn to it, at which time the patient’s quality of life begins to decrease, and in severe cases, amputation or even life-threatening. Therefore, in addition to cardiovascular and cerebrovascular pathologies, arterial pathologies of the lower extremities should also be screened for early intervention.