If the pain in one testicle is caused by orchitis or prostatitis, it may cause premature ejaculation, while the pain caused by other reasons usually does not, and further examination is recommended. 1. If it is clear after further examination that the pain in one testicle is caused by orchitis, epididymitis, etc., then it may cause premature ejaculation and oligospermia if treatment is not timely. 2. If the pain in one testicle is caused by prostatitis and the feeling of swelling in the scrotum, it may also have some effect on the sexual function. 3. In addition, if the cause of the hidden pain in one testicle is varicocele or testicular torsion, it usually does not cause premature ejaculation and other symptoms. Therefore, it is recommended to go to the hospital for further examination to clarify the cause of the disease and deal with it in time.