Objective:To compare the analgesic efficacy between the continuous lumbar plexus block（CLPB） combining with multimodal analgesia and patient controlled intravenous analgesia（PCIA）combining with multimodal analgesia after revision hip arthroplasty. Methods:Totally 68 patients for single side revision hip arthroplasty were equally divided into CLPB group and PCIA group. The parecoxib was used in both groups 3 days before operation. The ropivacaine was used to analgesia through lumbar plexus catheteriza-tion in CLPB group

and the PCIA group with tramadol and flurbiprofen analgesia. All patients continued analgesia for 3 days. After operation

the parecoxib was used when visual analogue scale（VAS）scores more than 3 scores in exercise state. The VAS scores at rest and exercise state were estimated. The parecoxib dose by intravenous injection and the presses of the pump were recorded. And the complications were observed. Results:The VAS pain scores of CLPB group during rest at different time points after revision hip arthroplasty were significantly lower than those of PCIA group（P<0.05）. The VAS scores of CLPB during exercise at 6 h

12 h

24 h after revision hip arthroplasty were（2.50±0.71）

（3.59±0.99）

（3.67±1.01）

which were significantly lower than those of（4.97±0.94）（P=0.00）

（4.85±0.86）（P=0.00）

（4.32±0.73）（P=0.00）in PCIA group at corresponding time points. In CLPB group

the parecoxib dose by intravenous injection and presses of the pump were fewer than that of PCIA group（P<0.05）. And the side effects of CLPB group were fewer than those in PCIA group. Conclusion:CLPB combined with multimodal analgesia can alleviate the early pain of patients undergoing revision hip arthroplasty;the patients who received CLPB technique showed better pain relief

less complication than those who been given PCIA. Therefore

CLPB combined with multimodal analgesia should be considered a better analgesia method for patients after revision hip arthroplasty.