If a patient has shivering when hungry, it is because hunger leads to hypoglycemia and hypoglycemia causes shivering around the body. This is usually related to the following factors: 1. medication factors, for example, patients with previous history of diabetes, such as the application of insulin or excessive application of sulfonylurea hypoglycemic drugs, will lead to the above situation, and must adjust the medication. 2. for some serious diseases, such as liver failure, heart failure, renal insufficiency, sepsis or nutritional deficiency, resulting in the lack of glucagon, will also appear after starvation shivering. 3. 3.The above-mentioned condition may also occur when there is a lack of insulin antagonist hormone, cortisol, glucagon, adrenal gland and other hormone deficiencies. 4.The above-mentioned clinical manifestations may also occur when there is a secondary hypoglycemic reaction after surgery.