Erectile dysfunction can be caused by circumcision, prostatitis or premature ejaculation. 1. The foreskin is too long: when men don’t clean the foreskin for a long time, the foreskin can be too long, and after the penis area is slightly stimulated by the outside world, the symptom of easy erection and easy ejaculation can appear. 2. Prostatitis: Prostatitis can be induced when the prostate is stimulated by physical and chemical factors or when it is infected by bacteria. The repeated stimulation of the area can also lead to easy erection and easy discharge, and can be accompanied by urinary pain, urinary frequency and other manifestations. 3. Premature ejaculation: Under the influence of psychological hormones and other reasons, men may have sexual dysfunction diseases causing premature ejaculation. After suffering from this disease, male patients may not be able to control ejaculation and ejaculation time is too short and other conditions, may also cause easy erection and easy to discharge performance.