Diabetes has the potential to affect sexual function in men. If a diabetic patient suffers from long-term poor control of blood glucose levels, autonomic neuropathy may occur, causing urogenital dysfunction. Thus, impotence, premature ejaculation and other phenomena occur, so diabetes has the potential to affect the sexual function of men. Patients in daily life, should develop good habits, appropriate physical exercise and follow the doctor’s instructions for regular review, especially the use of hypoglycemic drugs, must follow the doctor’s instructions, not unauthorized increase or decrease in dosage. It is recommended that diabetic men with abnormal sexual function go to the hospital in time and follow the doctor’s instructions for treatment to avoid delaying the condition.