In clinical practice, many diabetic patients insist on taking glucose-lowering drugs, but the blood sugar control is not ideal, why is this? We summarized 8 common mistakes: First: not controlling diet. Diet therapy is the basis of diabetes treatment, and its purpose is to reduce the burden on pancreatic beta cells to help them restore their function. Trying to counteract this by taking more glucose-lowering drugs without controlling the diet is like “whipping a sick horse”, which is wrong and dangerous. Second: Take medication according to your symptoms. The typical symptoms of diabetes, such as excessive drinking, excessive urination, excessive eating and weight loss, occur only when blood sugar is very high. Many patients adjust the dosage of hypoglycemic drugs arbitrarily because of no obvious discomfort, resulting in poor blood sugar control. Third: irregular follow-up. Some patients do not monitor blood glucose, blood lipids and blood pressure, do not pay attention to the factors affecting their blood glucose and urine sugar changes, do not summarize their own medication rules, but follow the clouds and take medication. This is the main reason why our diabetic patients are more serious and have more complications than those in some developed countries. Fourth: not receiving insulin treatment when it is time to use insulin. Fifth: do not understand the characteristics of oral hypoglycemic drugs. For example, the efficacy of some sulfonylurea hypoglycemic drugs gradually increases with time, so you cannot change the drug in a hurry. And, each hypoglycemic drug has a maximum effective dose. Do not jump to conclusions before using the maximum effective dose. Sixth: think that the high price of the drug is a good drug. There is no question of which drug is better, the scientific term is which kind of hypoglycemic drugs are more suitable. The drug that is effective for A may not necessarily be effective for B, and may even be harmful. The seventh: the pursuit of diabetes can “go to the root” of the special drugs. Some patients even stop the effective treatment at this stage when their blood sugar has been well controlled, and go in search of the “magic pill”. The comprehensive treatment of diabetes, including diet, exercise and medication, is the culmination of people’s wisdom in their long struggle with diabetes and is a method that has been rigorously proven to be effective. Eighth: Blindly worry about the side effects of drugs. Some people believe that taking medication for a long time will damage liver and kidney functions. In fact, the dosage of hypoglycemic drugs is safe as long as it is within the range prescribed by the pharmacopoeia. Side effects are only seen in individual patients, and the side effects disappear after stopping the medication and do not bring serious effects. In fact, the consequences of uncontrolled hyperglycemia are much more serious compared to the possible side effects of taking the medication.