If you want to gain weight after losing weight due to diabetes, you need to investigate the cause of the weight loss and treat the symptoms accordingly. If the weight loss is caused by too strict diet control, the diet program needs to be adjusted. 1. Excessive control of diet: Most diabetic patients need to control their diet, however, some patients lose weight due to too strict diet control. The treatment is to adjust the diet and increase the amount of diet appropriately. It should be noted that the increase in dietary dosage should also follow the doctor’s instructions to adjust the dosage of hypoglycemic drugs accordingly. 2. Pharmacological effects of hypoglycemic drugs: some hypoglycemic drugs can reduce weight, such as metformin, liraglutide, etc., which may cause the patient to lose weight after using the drug, in which case the patient can be adjusted to other types of hypoglycemic drugs in accordance with the doctor’s instructions. 3. The disease itself: diabetes itself can cause weight loss. Fattening need to control blood sugar, common hypoglycemic drugs for insulin, metformin and so on. Diabetic patients should pay attention to the diet to control the total calories, rational distribution of nutrients, eat less and more meals. Consultation with a doctor is needed for diagnosis and treatment when significant wasting occurs.