All 71 adult patients were prospectively included and randomized to either the local (L) group (n=35) or the intravenous (V) group (n=36) by using a random number table: the test group were treated with local analgesia infusion pump of 0.33% ropivacaine through the wound for postoperative analgesia, while the control group were treated with intravenous analgesia pump infusion of flurbiprofen axetil,palonosetron, pentazocine. At 2, 4, 6, 12, 24, 36, 48 hours after operation, postoperative pain visual analogue scale(VAS) scores and sedation Ramsay scores were used to evaluate the level of pain and sedation, and investigators documented the comprehensive evaluation of patients with pain control system, and the incidence of adverse reactions. At 24, 48 hours investigators observed the wound whether inflammation and exudation or not, and the removal of penetration catheter sent to clinical laboratory for bacterial culture. Investigators also recorded the length of time to discharge and called to ask pain conditions at the first 3 months.