Long-term insulin will not affect sexual function, the real impact on sexual function is diabetes itself. The greater harm of diabetes is the damage to the peripheral circulation and capillaries of the human body. Vascular lesions of the peripheral circulation often lead to lesions of the fundus and kidney functions, including insufficient blood supply to the male reproductive system, bringing about the problem of sexual dysfunction. Therefore, long-term use of insulin, especially insulin control of blood sugar under the guidance of an endocrinologist, the treatment process itself is conducive to improving sexual function without side effects on sexual function. In addition to controlling diabetes, many other factors in men, may also affect sexual function, such as anxiety, nervous emotional state of mind, such as unhealthy living and eating habits. It is important to develop good habits such as low salt and low fat diet and intake of melons, fruits and vegetables. Also have other cardiovascular diseases, such as coronary heart disease, macrovascular lesions, brain infarction, etc., or have metabolic system diseases, such as thyroid disease, other comorbidities may also lead to male sexual dysfunction. Therefore, in the process of correcting diabetes, there is no need to worry about the impact of insulin on sexual function, but more attention should be paid to the control of diabetes itself, or other comorbidities, and only with good control can sexual function be well improved and maintained.