Stabbing pain when inserting a catheter may be caused by friction between the catheter and the mucous membrane, improper use of the catheter, the presence of urinary tract infections, prostatic hyperplasia or urethral stenosis. 1. The urethral mucosa is rich in sensory nerves, when inserting a catheter, the catheter insertion process will be friction with the urethral mucosa, causing local mucosal pain, which is generally normal. 2. It may also be due to improper operation of the catheter, caused by the stinging pain. If the operation process is too violent, or the urethra is not adequately lubricated. 3. It may also be caused by the patient’s own urinary tract infection, if the patient already has a urinary tract infection, in the process of inserting the catheter, may aggravate the infection, and cause urethral pain and discomfort. 4. Due to prostate hyperplasia gland pressure urethra as well as urethral narrowing, the process of inserting a urinary catheter is difficult, and the phenomenon of stinging pain will also occur. If you want to have an indwelling urinary catheter, please visit a regular hospital and have it done by a healthcare professional. If the stinging pain is obvious after the catheter is indwelling, it is recommended to consult a doctor in time for active treatment.