Bowel sounds left abdominal pain and frequent urination may be caused by ureteral stones, prostatitis, bowel cancer and other reasons. 1. Ureteral stones: Ureteral stones can be caused when kidney stones get stuck at the narrowing of the ureter in the process of kidney stone discharge. The disease will cause obvious abrasion to the mucous membrane of the ureter, causing the patient to suffer from left abdominal pain. The disease can also irritate the intestinal tract or urethra, causing intestinal tinnitus as well as frequent urination and other symptoms. 2. Prostatitis: Prostatitis can be induced by bacterial infection of the prostate. After being stimulated by inflammation, patients may experience acute pain in the perineum and frequent urination. When the condition is allowed to develop, the inflammation can also cause stimulation to the surrounding tissues, causing the patient to experience bowel sounds and left abdominal pain. 3. Bowel cancer: under the influence of age, heredity and dietary habits, bowel cancer may be caused. With the increasing size of tumor, it will cause pressure on the surrounding tissues, causing patients to suffer from left abdominal pain and frequent urination, etc. The disease will also affect the normal function of intestines. The disease also affects the normal function of intestines, causing patients to suffer from abdominal distension and tinnitus. Bowel sounds, left abdominal pain and frequent urination may also be caused by other reasons, such as colitis, pelvic inflammatory disease, etc. It is recommended that the patient go to the hospital in time to clarify the cause of the disease and choose the appropriate treatment under the guidance of the doctor.