Suddenly can’t hold urine is belongs to urinary incontinence, it may be caused by urinary system infection, urinary system stone, overactive bladder disease, etc. It can be adjusted by general treatment, medication, surgical treatment and other measures. 1. Urinary system infection: various causes of cystitis, urethritis, pyelonephritis and other infectious diseases, can cause urinary tract irritation, causing frequent urination, urinary urgency, urination pain, which may lead to sudden inability to hold urine. Drink plenty of water to promote metabolism, take levofloxacin, cefixime and other drugs for anti-infection treatment. 2. Urinary stones: urinary stones stones appear position change, may cause urinary tract irritation, can also lead to sudden urinary incontinence. Smaller stones can take drugs such as sodium hydrogen potassium citrate granules and drink more water and exercise; larger stones can be crushed by extracorporeal shock wave lithotripsy, or percutaneous nephrolithotomy and other measures. 3. Overactive bladder syndrome: the cause of the disease is still unclear, may be related to the overactivity of the urethra muscle, which can cause frequent urination, urinary urgency, enuresis, and can also lead to sudden urinary inability to hold. Usually you should exercise more, control your weight, reduce coffee, alcohol and other stimulating products, you should also quit smoking and alcohol, more anal exercises, medication you can take Tolterodine capsules, Solynacin succinate tablets and other drugs to treat. Suddenly can not hold the urine there may be other reasons, it is recommended to go to the hospital in time to check, follow the doctor’s instructions for treatment. All of the above drugs should be applied under the guidance of a doctor.