The main manifestations of diabetic hypoglycemia are autonomic hypoglycemia symptoms and cerebral neuronal hypoglycemia symptoms. Autonomic hypoglycemia symptoms can be manifested as hunger, palpitations, etc. Cerebral neuron hypoglycemia symptoms can be manifested as behavioral changes, psychomotor abnormalities, etc. 1. Autonomic hypoglycemic symptoms: including tremor, palpitation, anxiety, sweating, hunger, sensory abnormalities, etc. 2. Symptoms of hypoglycemia in the neurons of the brain: including cognitive impairment, behavioral changes, psychomotor abnormalities, seizures and coma if the blood glucose concentration is lower, and more severe hypoglycemia may lead to brain death. If hypoglycemia occurs in diabetes mellitus, it is recommended to go to the hospital in time and be treated under the guidance of a doctor.