The patient’s sudden urge to urinate all the time may be caused by urinary tract infection, acute prostatitis, and urolithiasis. 1. urinary tract infection: urinary tract infection is a kind of infectious disease caused by pathogens abnormally reproducing in the urinary tract, which is common in women of childbearing age, the elderly, and people with low immunity, the main clinical manifestations of urinary frequency, urinary urgency, urinary pain, hematuria, and other symptoms, the patient’s sudden inability to urinate all the time, the urge to urinate can be caused by a urinary tract infection. 2. Acute prostatitis: prostatitis is a common disease in adult males, acute prostatitis has a rapid onset, the main manifestations of urinary frequency, urinary urgency, urinary pain, urinary symptoms, some patients are also accompanied by hesitation in urination, urinary line intermittent, and even acute urinary retention, etc., the patient suffers from acute prostatitis, there may be a sudden lack of urination has always been a urinary situation. 3. Uremia: Uremia is mainly due to the lack of antidiuretic hormone or the kidneys are not sensitive to it, the patient is mainly manifested as polydrinking, polyuria, the feeling of incomplete urination, etc., therefore, patients with uremic syndrome may appear sudden incomplete urination all the time have the urge to urinate. It is recommended that patients seek timely medical examination, clear causes for targeted treatment, pay attention to personal hygiene in life, to keep the perineum and other parts of the clean, hygienic and dry, while patients try to avoid sex during the period of illness, and comply with the doctor’s instructions for regular review.