It is important to note that: 1. Chronic complications of diabetes often have an insidious onset, with few subjective symptoms in the early stages, and once significant discomfort occurs, it usually indicates a more serious condition and poor treatment. 2. The Chinese Diabetes Prevention and Control Guidelines emphasize that screening for complications is required 5-7 years after the onset of type 1 diabetes, and type 2 diabetes should be screened for complications as soon as it is diagnosed, and at least once/year thereafter. 3. For early chronic complications of diabetes, there is a chance of reversal with active and effective treatment, so it is important to do a good job of “early detection and early treatment”.