Low blood sugar before dinner may be related to excessive hunger, diabetes and other conditions. 1. Excessive hunger: If there is no meal during the day, the patient is excessively hungry and the body consumes too much, resulting in insufficient sugar inside the patient’s body, a series of hypoglycemic reactions will occur. For example, the patient will panic, shaking hands and feet, general weakness, generalized sweating and other symptoms. 2. Diabetes: diabetic patients due to delayed peak insulin secretion in the body, insulin proper increase and other phenomena, will lead to low blood sugar before meals. In addition, if diabetic patients use a large dose of drugs in the afternoon, it can also cause preprandial hypoglycemia. There may also be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.