Early symptoms of diabetes need to improve the fasting blood glucose, glucose tolerance test and other related examinations, once diagnosed with diabetes need to be treated through medical nutrition therapy, exercise therapy and drug therapy and other methods of treatment. Medical nutrition therapy is the basic management measure for diabetes, firstly, the total calorie intake should be controlled according to the specific situation of the patients, and the total calorie intake can be increased appropriately for the underweight, pregnant women or breastfeeding women, while the total calorie intake of the obese people needs to be reduced appropriately; secondly, it is also necessary to reasonably allocate the nutrients and the frequency of the meals; lastly, it is necessary to maintain the low-salt, low-fat and low-sugar eating habit. Exercise therapy can promote the body’s sensitivity to insulin, especially for obese type 2 diabetes patients. Drug therapy includes oral hypoglycemic drugs and injectable preparations, etc. Oral hypoglycemic drugs include metformin and acarbose, and injectable preparations include insulin and liraglutide. Patients with early symptoms of diabetes should actively cooperate with doctors for treatment.