After the line after the frequent urination may be physical stimulation factors, sexually transmitted diseases, women may also be bacterial infection of the urethra caused by cystitis caused by men may also be prostatitis caused by. 1. Physical stimulation: If the action is too big and too many times during the coitus, it will produce certain stimulation to the urethral opening of both men and women, and even produce the phenomenon of redness and swelling, and then it may appear the situation of frequent urination. 2. Sexually transmitted diseases: In addition, the patient may also be infected with gonorrhea, nongonococcal urethritis and other sexually transmitted diseases during coitus, which may also cause frequent urination. 3. Infectious factors: In addition to the above factors, women in the same room after the frequency of urine may also be due to E. coli, Staphylococcus aureus, etc. into the urethra, caused by cystitis symptoms; men in the same room after the frequency of urine may also be due to the symptoms of prostatitis, prostate gland enlargement will stimulate the contraction of the neck of the bladder, the emergence of frequency of urination, urinary urgency and other symptoms. The frequency of urination may also be caused by other factors. It is recommended that patients go to a regular hospital for treatment when symptoms persist.