Pain during erection and ejaculation is considered to be due to prostatitis, penile sclerosis, penile tuberculosis and other diseases. 1. Prostatitis: Prostatitis can cause local tissue congestion and swelling, the pain threshold is lowered, when the male penis erection and ejaculation will stimulate the inflammatory lesions, pain. 2. penile sclerosis: the etiology of this disease is not fully understood, mostly related to local injury, genetic factors, early patients will have pain during erection, or the erect penis is curved, and in the distal 1/3 of the penis dorsal can be seen in a single or more subcutaneous hard knots, some patients can have pain during ejaculation. 3. Penile tuberculosis: the penile area is infected by tuberculosis bacteria, after the onset of the disease, the patient will have hard nodules or ulcers in the glans area, and no obvious pain, with the development of the disease, the ulcer surface gradually expand, and even lead to part of the necrosis of the tissues, the patient may be self-conscious of pain and other discomforts during erection and ejaculation. 4. Vesiculitis: When vesiculitis occurs, it can also cause pain during erection and ejaculation. There are many other causes of pain during erection and ejaculation, so it is recommended that patients go to the hospital in time to clarify the cause of the disease and receive treatment as soon as possible.