There are possible reasons why you can’t hold your urine: 1, acute cystitis or urethritis, there will be bladder urethral mucosal congestion, edema with increased sensitivity, which stores a small amount of urine can produce a sense of irritation of urination, the patient needs to immediately go to urinate so he can’t hold his urine and is accompanied by pain in urination or pain in the abdomen, etc., you need to carry out a routine urinalysis or urine culture test to confirm the diagnosis. 2, bladder hyperactivity disorder is common in women. Activity disorder is common in women, the specific cause is not known. If the urine examination to exclude infection, the presence of excessive frequent contraction of the bladder muscle, resulting in the inability to hold urine, the patient will appear strong urinary frequency, but not accompanied by urinary urgency, urinary pain and other symptoms, the need for urodynamics examination to further confirm the diagnosis. 3, if the bladder or urethra there is a stone, tumors and other diseases can lead to increased irritation and inability to hold urine, and at the same time more often associated with symptoms such as urinary pain and hematuria, need to be further diagnosed. Pain and hematuria and other symptoms, need to carry out ultrasound of the urinary system or cystoscopy and other tests to further confirm the diagnosis.