If the blood sugar is still high after taking insulin, you should judge whether the dose is not enough or insulin resistance has occurred, and you should strictly control the diet, cooperate with the treatment of hypoglycemic drugs or adjust the dosage of insulin according to the different situations under the guidance of the doctor. 1. If the blood sugar is still high after the insulin meal, it may be due to the food with high sugar content (such as steamed buns, cakes, etc.), which leads to the normal dose of insulin not being able to control the blood sugar well. At this time, you should pay attention to diet control, eat less sugary foods, foods with high fat content (such as fat, chocolate, etc.), eat more fruits and vegetables, eat less and more meals, and control the intake of calories. 2. It may be because the patient’s blood glucose is too high and the insulin dose is not enough, thus not achieving the effect of lowering glucose, the blood glucose should be strictly monitored, according to the blood glucose level to adjust the dose of insulin, or with some hypoglycemic drugs (such as metformin, pioglitazone, etc.), and at the same time, must be strictly control the diet. 3. There is also the possibility that the patient himself has insulin resistance, resulting in insulin blood glucose is still high, this situation should be based on the use of insulin with metformin, pioglitazone and other drugs that can increase the sensitivity of insulin, and at the same time to control diet. High blood glucose after meals with insulin should seek medical attention in time, and regular treatment under the guidance of a doctor.