There are many reasons for men to experience stomach distension and discomfort after ejaculation. First of all, it is considered to be the process of male sexual life by the parasympathetic nerve innervation, continue to be in a state of excitement, resulting in gastrointestinal tract peristalsis accelerated, men in the ejaculation of sympathetic nerve excitation, however, gastrointestinal tract peristalsis is inhibited, so the gastrointestinal tract peristalsis will be slowed down, and thus the stomach has a feeling of bloating pain. Secondly, it is considered that the ejaculatory duct or seminal vesicle opening is narrowed, because the narrowing leads to increased resistance to ejaculation, and long-term inflammation of the seminal vesicles stimulates the peripheral nerves and radiates to the lower abdomen, so there will be symptoms of discomfort in the lower abdomen. Once again, it is considered that men suffer from chronic prostatitis, because the process of ejaculation will have an impact on the prostate, after ejaculation, the lower abdomen has a feeling of swelling, need to carry out prostate fluid laboratory tests. Finally, it is recommended that men should pay attention to rest after ejaculation, and if it is caused by a disease, it is recommended to consult a doctor in time and treat the symptoms after examination.