There is no fastest and effective way for the elderly not to urinate. It may be caused by prostate enlargement, urethritis, and urinary retention, and needs to be treated under the guidance of the doctor through general treatment, medication (tamsulosin, levofloxacin, etc.), and surgery. 1. Prostatic hyperplasia: If the patient is affected by old age and sex hormones, he/she may have the symptom of not being able to urinate. If the symptoms are relatively mild, generally can not be treated first, need to be regularly reviewed, but also under the guidance of the doctor to use terazosin, alfuzosin, tamsulosin, finasteride and other drugs for treatment, but also through the transurethral resection of the prostate and other surgical treatment. 2. Urethritis: most of the disease is caused by Neisseria gonorrhea, Chlamydia trachomatis, Mycoplasma, Trichomonas, hepatitis viruses and other diseases that lead to urinary incontinence in the elderly, which can be treated under the guidance of the doctor through the use of ceftriaxone, cefixime, levofloxacin, azithromycin, erythromycin, and other drugs. 3. Urinary retention: the elderly can not come out of the urine may be due to urinary retention, the patient urine discharge obstacles, retention in the bladder, can be catheterization, syringe urine extraction method, suprapubic cystostomy, open cystostomy, etc. for treatment. It is recommended that patients go to the regular hospital in time, under the diagnosis of the doctor, according to the specific condition of the patient, to take targeted treatment.