Inserting a urinary catheter before cesarean section is a little painful if it is done before anesthesia, but it is usually tolerable; if it is done after anesthesia, it is not painful. The purpose of inserting a urinary catheter before cesarean section is to prepare for the operation. During the operation, the kidneys will produce urine continuously, which will lead to the filling of the bladder, which is not conducive to the exposure of the surgical field of vision, and will easily lead to the injury of the neighboring organs during the operation. Therefore, after insertion of a urinary catheter, an empty bladder is favorable for surgery and ensures the safety of the bladder. If the urinary catheter is inserted before anesthesia for cesarean section, it is somewhat painful due to the friction of the urinary catheter on the mucous membrane of the urethra, but it is usually tolerable. However, if the urinary catheter is inserted after anesthesia, the pregnant woman will not usually feel any pain. Cesarean section is now a mature surgery, pregnant women should not be too anxious before the cesarean section, pay attention to relaxation, and consult the attending doctor if you have any questions.