Diabetes bloodletting therapy is unreliable, it is recommended to lower sugar scientifically under the guidance of a doctor. 1. Definition of diabetes mellitus: diabetes mellitus is a group of metabolic diseases characterized by high blood sugar. It is caused by defective insulin secretion or its impaired biological action, or both. Long-term hyperglycemia can lead to chronic damage and dysfunction of various tissues and organs. 2. Treatment of diabetes mellitus: It mainly includes diabetes education, self-monitoring of blood glucose, diet therapy, exercise therapy and drug therapy. (1) Diabetes education: diabetic patients should be educated to know the basic knowledge of diabetes and learn to manage their blood sugar. (2) Diet and exercise therapy: Some patients with mild diabetes can control their condition with diet alone, and increased exercise can reduce body weight and improve the body’s sensitivity to insulin. (3) Medication: For diabetic patients who are not well treated by diet and exercise, they should use medication under the guidance of professional doctors, and common medications such as metformin and insulin. 3. Bloodletting therapy for diabetes is unreliable. Bloodletting therapy for diabetes does not have a theoretical basis and lacks clinical evidence. Diabetic patients with low immunity, if combined with vascular disease, poor blood circulation, bloodletting therapy can cause slow healing of diabetic wounds. Diabetic patients should be treated scientifically under the guidance of a doctor.