The reasons for the constant need to urinate several times after a bowel movement include cystitis, urethritis, prostatitis, prostate hyperplasia, and so on. 1. Cystitis: due to various factors triggering inflammation of the bladder, the inflammatory factor triggers the swelling of the bladder, which leads to the narrowing of the urethral orifice, so the phenomenon of constantly having to urinate several times occurs. 2. Urethritis: The inflammation of the urethra due to various factors leads to the narrowing of the urethra due to the swelling of the urethra, and the symptom of having to urinate several times will also occur. 3. Prostatitis: when various factors lead to inflammation of the prostate gland, the prostate gland is swollen and presses the urethra, so the phenomenon of incomplete urination occurs. 4. prostate hyperplasia: due to a variety of factors lead to a large number of prostate cell proliferation, when the prostate gland pressure on the urethra can also lead to urinary incontinence. Finally, the phenomenon of having to urinate several times after having a bowel movement, please consult a doctor in time.