Self-therapy for diabetes includes: 1. Diet control: focus on the principle of high-protein, low-fat, low-sugar diet, eat more grains and cereals, fresh vegetables, and less starchy food; 2. Weight control: for patients with diabetes combined with obesity, exercise should be strengthened to reduce body weight; 3. Monitoring of blood glucose: regular monitoring of blood glucose, so as to keep blood glucose control in the ideal range; 4. Self-protection: as high blood glucose is not conducive to wound healing and easily lead to infection, so we should actively control blood sugar and avoid trauma in our life.