The first is a normal physiological reaction, because in the process of sex, in addition to the erection of the penis, other organs also have to cooperate with the sexual impulse, such as the scrotum, testicles, epididymis on the lift, in a high state of tension, while the prostate will be highly congested, if the time of sex is too long will lead to the soreness and pain of these tissues, usually the day after sex It will be relieved the day after sex. The second, if this pain does not disappear the next day or for a long time, we should consider whether there are chronic pathologies of the organs, such as prostatitis, vesiculitis, varicocele or epididymal cysts and syringomyelia in the scrotum, which can aggravate the pain in the testicles during sexual intercourse. If this happens, you can go to a regular hospital for scrotal ultrasound and related tests, and ask a professional doctor to make a judgment. If you do have these diseases, you can actively treat them so as to improve the painful sensation in the testicles after sexual intercourse.