The discomfort may be caused by urological diseases, gynecological diseases, prostate diseases and other factors. 1. urinary system diseases: such as urethritis or bladder stones and other urinary system diseases, during sex may lead to infection aggravation as well as the movement of stones, will lead to discomfort in the same room, manifested as pain in the lower abdomen, swelling, urinary frequency, urinary urgency, urinary pain. 2. Gynecological diseases: vaginitis, for example, will cause irritation to the damaged vagina during intercourse, which will lead to discomfort during intercourse, manifested as vaginal itching, vaginal pain, vaginal bleeding. 3. Prostate diseases: prostatitis, for example, can lead to repeated congestion in the prostate area during intercourse, which may cause pain in the pelvic area, such as pain in the penis, testicles and other parts of the body, accompanied by frequent urination, incomplete urination, urinary dribbling and other symptoms. The coitus will be uncomfortable and seriously affect the quality of sexual life, it is recommended to seek medical examination and treatment.