Participants will receive acupuncture, five times per day form pre-operation to 3 days after operation. The selected acupoints include RN3,RN4, bilateral ST36,SP6,SP9 and LR3. All acupoints areas have been sterilized before acupuncture. needles (Ф0.30×50mm) will be directly inserted at a depth of 25-30 mm deep. Arrival of Qi by acupuncture and needle retaining for 20 minutes.

Participants will receive shame acupuncture, five times per day form pre-operation to 3 days after operation. The selected non-acupoints nearby RN3,RN4, bilateral ST36, SP6,SP9 and LR3, All acupoints areas have been sterilized before acupuncture. needles (Ф0.30×50mm) will be directly inserted at a depth of 5 mm deep. Needle retaining for 20 minutes and without needle manipulation.

Participants will receive acupuncture.

participants will wear an electronic counter to record the number of episodes of Catheter-Related-Bladder Discomfort (CRBD)

participants will be requested to describe the situations of CRBD, the severity will be evaluated by the principal investigator. the scoring system for catheter- related bladder discomfort measurement as 4 levels: 0 score, no discomfort; 1 score, mild discomfort only reported upon questioning; 2 score, moderate discomfort, urge to pass urine reported by the patient without questioning; 3 score, severe discomfort, ruge to pass uine accompanied by behavioral responses, such as flailing limbs, storng verbal responses, or attempt to pull out the catheter. The higher scores means worse outcome.

participants will wear an electronic counter to record the number of episodes of CRBD, they will be requested to describe the situations of CRBD, the severity will be evaluated by the principal investigator. The scoring system for catheter- related bladder discomfort measurement as 4 levels: 0 score, no discomfort; 1 score, mild discomfort only reported upon questioning; 2 score, moderate discomfort, urge to pass urine reported by the patient without questioning; 3 score, severe discomfort, ruge to pass uine accompanied by behavioral responses, such as flailing limbs, storng verbal responses, or attempt to pull out the catheter. The higher scores means worse outcome, 2 to 3 score would be identifited moderate to severe CRBD.