Examination of chronic complications and concomitant diseases: 1. Urine routine, urine microalbumin and renal function Urine routine should pay attention to urine sugar, urine protein and urine ketone bodies. In early diabetic nephropathy, urine protein is often negative in routine urine examination, but urine microalbumin exceeds 30 mg/24 hours (or urine microalbumin/creatinine exceeds 30 mg/g), if treated in time, it can mostly return to normal. If you have kidney damage, you should check urea nitrogen and blood creatinine regularly, and calculate glomerular filtration rate (GFR) to assess kidney function. 2. Pay attention to your liver function Understand whether the combination of fatty liver or chronic liver disease, and the need to observe the impact of drugs on the liver. 3.Ophthalmology examination Include examination of fundus to exclude diabetic retinopathy cataract, glaucoma, etc. 4.Dorsalis pedis artery pulsation, lower limb vascular ultrasound, neuromyography (nerve conduction velocity) To understand whether there are lower limb vascular and peripheral neuropathy. 5.Cardiovascular series examination: including electrocardiogram, ambulatory electrocardiogram, cardiac ultrasound, coronary CT, carotid ultrasound, cerebrovascular ultrasound, cranial CT, etc., to exclude arrhythmia, coronary heart disease, stroke, etc. 6.Check for concomitant diseases Including abdominal ultrasound to exclude fatty liver and cholelithiasis, check chest X-ray to exclude lung infection, and check chest CT if necessary. check urine routine to exclude urinary tract infection, and do mid-stage urine culture if necessary. Frequency of examination: In case of special circumstances, the frequency of examination should be adjusted. 1.Daily test: blood sugar, blood pressure. 2.Once a week: weight, waist circumference, dorsal foot artery pulsation 3.Once a month: urinary routine 4.Once a quarter: glycated hemoglobin. 5.1 time every six months: dynamic blood glucose test, blood lipid, uric acid, urine microprotein, liver and kidney function test. 6.1 time every six months to a year: islet antibody and islet function, fundus examination, neuromyography, lower limb vascular ultrasound, cardiovascular and cerebrovascular series, chest X-ray, abdominal ultrasound, etc. Diabetes control goals: Diabetic patients should not only be treated, but it is important that all indicators should be met in order to delay and control the occurrence and development of chronic complications, reduce the rate of disability and death, improve the quality of life, and enjoy a healthy life.