Whether patients with high blood sugar can receive the New Crown vaccine depends on whether they are in the acute phase of diabetes and whether they have developed complications related to diabetes. The contraindications to the vaccination of New Crown vaccine do not specify how much higher blood glucose can not be given to New Crown vaccine. 1. If the patient with high blood glucose is in stable condition and no diabetes-related complications have appeared, i.e., fasting blood glucose can be maintained below 13.9 mmol/L through medication control, New Crown vaccination can be given; 2. and fasting blood glucose is still higher than 13.9mmol/L even through drug control, vaccination with New Crown vaccine should be withheld. It is better to vaccinate after the condition is stable and consultation with the attending physician and the vaccinating physician, so as not to affect the effectiveness of the vaccine and not to facilitate the control of blood glucose. 3. If patients with high blood glucose have developed complications of diabetes, such as diabetic ketoacidosis, diabetic nephropathy, fundus bleeding, diabetic foot, etc., vaccination with the New Crown vaccine should be suspended and considered again after the condition is stable. In addition, if a patient with high blood glucose also has acute diseases such as fever and acute gastroenteritis, vaccination should also be withheld in order to prevent the vaccination from being detrimental to the control of the original disease and aggravating the patient’s discomfort.