There are more causes of hypoglycemia, mainly including application of insulin, alcohol, insulinoma, severe liver disease and reactive hypoglycemia, etc. After emergency treatment, the causes need to be clarified and adjusted and treated from the root. Common symptoms 1. Typical symptoms: The common symptoms caused by hypoglycemia are mainly panic, hand trembling, pale face, cold sweat, strong hunger, etc. Some patients may appear coma, which are more typical symptoms of sympathetic excitation caused by hypoglycemia, which is also an alarm signal to the human body; 2. Atypical symptoms: Some symptoms of hypoglycemia may not be typical, but are manifested as mental changes, personality change, behavior change, such as appearing irritable personality, scolding family members, and some patients will have cognitive decline in hypoglycemia, not recognizing familiar people. Treatment measures 1. Conscious person: If the patient is clear, encourage the patient to eat some sugary food, such as white sugar, fruit sugar, sandwich cookies, or drink dessert drinks. Retest the blood sugar 15 minutes after eating sugary food to know whether the blood sugar has returned to normal level. If it has returned to normal level, you can eat some solid food, such as steamed buns, buns, etc.; 2. Loss of consciousness: For hypoglycemic patients whose consciousness has become blurred or even comatose, do not feed them to avoid choking. They should be sent to the hospital urgently for treatment, and the hypoglycemia should be corrected by intravenous infusion of glucose liquid. Note that hypoglycemic episodes are fierce, and it is important to strengthen blood glucose monitoring in general. The diagnosis standard of hypoglycemia in diabetic patients is higher than that of normal people, if the blood sugar of normal adults is <2.8mmol/L and that of diabetic patients is <3.9mmol/L, it should be considered as hypoglycemic state. Since diabetic patients have to use hypoglycemic drugs, it will easily lead to hypoglycemia, and once hypoglycemia occurs, it is very easy to induce acute adverse events and malignant consequences.