Ejaculation without semen can be seen in the vas deferens inflammation, vas deferens injury and other diseases, after the cure of the disease is possible to have semen again, but also can be seen in the testicles caused by serious injury, this situation can not produce semen again. 1. Inflammation of the vas deferens, if the patient’s vas deferens is blocked due to vasculitis, the vas deferens may be reopened after anti-infection treatment or surgical recanalization, and the patient may be able to produce semen again. 2. Vas deferens injury, if the patient’s vas deferens is broken due to trauma, then it is possible to restore the vas deferens through surgery, and the patient may be able to produce semen again after treatment. 3. severe testicular injury, because semen is mainly produced by the testicles, when the testicular injury is serious, it may cause the testicular function can not be restored, for this cause of failure to ejaculate generally will not be restored. In conclusion, there are many possible causes for the absence of semen, and different causes lead to different consequences. You should consult a doctor in time to identify the cause and standardize the treatment under the doctor’s guidance.