Elderly syncope may be postural hypotension, diabetes, anemia, cardiogenic syncope, etc., should be timely consultation to identify the cause. 1. Postural hypotension: the regulation of blood vessels in the elderly is relatively poor, prone to postural hypotension, which can lead to syncope. 2. Diabetes: diabetic patients may have hypoglycemia due to irregular medication, resulting in syncope. 3. Anemia: when there is gastrointestinal bleeding, severe anemia, resulting in a transient insufficient blood supply to the brain, can cause syncope. 4. Cardiogenic syncope: suffering from serious heart disease, including ischemic heart disease, arrhythmia, valvular disease, myocardial disease, resulting in insufficient blood supply to the brain and fainting. If the elderly often have fainting, they should consult the doctor in time, ask the doctor to clarify the cause of the disease and give targeted treatment.