Diabetes mellitus is caused by the inability of pancreatic beta cells to secrete insulin normally or the decrease of insulin sensitivity of target cells, resulting in a relative or absolute deficiency of insulin, causing disorders of sugar, protein, fat, water and electrolyte metabolism and reduced glucose tolerance, resulting in elevated blood glucose and positive urine sugar. The typical symptoms at the beginning of the disease are “three more and one less”, i.e. drinking more, urinating more, eating more and losing weight. However, many patients may not have these typical symptoms, but only have elevated blood glucose and positive urine glucose, until a series of diabetes-related complications occur later. Diabetes is characterized by high blood glucose, but elevated blood glucose is only a superficial phenomenon of diabetes. All the harm caused by diabetes is manifested through complications, so prevention of diabetes complications is even more important for people with diabetes. Diabetes can lead to complications in all systems of the body, such as coronary heart disease, kidney damage, retinopathy (blindness), hyperosmolar coma, heart failure, arrhythmia, cardiogenic shock, cerebral embolism, cerebral hemorrhage, lower limb pain, extremity sensory abnormalities, intermittent claudication, gangrene (amputation) of the limbs, etc. For diabetic patients, diabetes itself is not scary, what is scary is the complications of diabetes, the real fatal killer is the complications of diabetes. Diabetes is the second largest killer of contemporary human diseases, and the death rate of diabetes is second only to cancer. According to the World Health Organization (WHO), the mortality rate of diabetes due to complications is as high as 43%! A survey of 30 provinces in China shows that the proportion of patients suffering from at least one complication of diabetes is now as high as 73.2%! Among the diabetic patients in China, there are 12 million people with hypertension, 5 million with stroke, 6 million with coronary heart disease, 450,000 with double vision, and 500,000 with uremia. In clinical practice, prevention of diabetes is our first line of defense. When this line of defense of prevention is defeated, we have a second line of defense, which is the prevention of complications of diabetes. We also have a third line of defense, which is to reduce disability and premature death from the chronic complications of diabetes. Because diabetes itself and its complications are increasingly dangerous to people’s physical and mental health, it is difficult to reverse the complications of diabetes once they have occurred and return to normal. Therefore it is necessary to make the majority of patients aware of diabetes and in addition need to know that the cost of treating diabetes complications is much greater than the cost of simply lowering sugar. In the treatment of diabetes, the control of various complications is of paramount importance. Although new oral hypoglycemic drugs are constantly emerging and insulin is widely used in clinical practice, the comprehensive therapy of Chinese medicine has the advantages of stable efficacy, non-toxic side effects, and the ability to regulate the internal environment of the body, improve physical fitness, improve insulin resistance status, regulate glucolipid metabolism, and enhance blood sugar self-stabilization for diabetes and its diabetes-induced complications. Chinese medicine is concerned with the overall conditioning of the person, so the goal of Chinese medicine is to improve the symptoms and to delay the occurrence or not occurrence of complications in patients through Chinese medicine treatment. Diabetes is a systemic disease that can affect all systems of the body, such as nerves, muscles, organs, etc., which can be affected by diabetes and lead to complications of diabetes. Our scientific research result, Qixiang Lekhi Hypoglycemic Tablets, has the effect of benefiting Qi and nourishing Yin, activating blood circulation and resolving blood stasis, and is used for diabetic complications such as thirst and excessive drinking caused by Qi and Yin deficiency and blood stasis, polyuria and easy hunger, thinness and weakness, spontaneous sweating and night sweating, dull complexion and numbness of limbs, helping patients to construct a second line of defense for diabetes. Therefore, the real needs of diabetic patients, in addition to effectively lowering blood sugar and glycated hemoglobin, must also effectively control the occurrence and development of diabetic complications. The two complement each other, and one cannot be without the other. The therapeutic concept of lowering sugar alone is wrong.