Coronary artery disease does not cause urinary retention. Urinary retention is caused by lesions related to the urethra and bladder. Coronary heart disease does not cause obstruction of the urethra or affect the normal function of the bladder, and thus does not cause urinary retention. Coronary heart disease, i.e. coronary atherosclerotic heart disease, refers to atherosclerosis of the coronary arteries leading to myocardial ischemia and hypoxia, which usually causes cardiovascular-related symptoms, mainly including: retrosternal pressure pain, pins and needles pain in the anterior region of the heart, tightness in the chest, shortness of breath, and decreased activity tolerance. Urinary retention refers to the obstruction of the urethra or bladder dysfunction resulting in the bladder filled with urine and can not be normally discharged, causing urinary retention of a variety of etiological factors, including: urethral calculi, tumors, stenosis and deformity, prostate hyperplasia, pelvic tumors, pregnancy uterus, surgical injury to the nerves innervating the bladder, diabetes mellitus caused by peripheral neuropathy, and so on. It is recommended that patients with urinary retention go to the urology department of the hospital in a timely manner to identify the cause of the disease and then give targeted treatment, such as the cause of the disease is unknown or acute urinary retention, can be temporary catheterization to relieve the symptoms of urinary retention.