The reasons for feeling distended but no urine discharge after insertion of urinary catheter include blockage of urinary catheter, bladder spasm, and improper position of urinary catheter. 1. Ureteral blockage: Due to the blockage of urinary catheter by tiny stones, dislodged mucous membranes, secretions, etc., it will cause the urinary catheter to be unable to discharge urine out of the body even though it is inside the bladder, resulting in the patient experiencing the symptom of urinary distension. 2. Bladder spasm: It is possible that after inserting the ureter, it irritates the patient’s bladder, triggering the patient’s bladder to have violent spasm contraction, resulting in the ureter being unable to drain the urine out normally. 3. The position of the urinary catheter is not in place: it is possible that the urinary catheter, although inserted, does not enter the bladder, but stays in the urethra, thus causing the patient to be unable to discharge the urine stored in the bladder, triggering the patient to have a feeling of urinary distension. If the patient feels bloated after inserting the urinary catheter but no urine is discharged, it is recommended that the patient seeks the help of a doctor in a timely manner to improve the relevant examinations, to clarify the cause of the disease, and to follow the doctor’s instructions for treatment.