Abstract: Abstract Objective Through observation and comparison of piezosurgery and round bur applied in the implant surgery, including Onlay bone grafting, sinus lift, bone splitting, this research was aimed at seeking the advantages and the key points to use piezosurgery. Methods 80 operation areas of 78 patients from Department of Implantation,Changzhou Stomatological Hospital were operated with the piezosurgery and round bur during 2006-2012, piezosurgery 42 cases and round bur 38 cases. Usethe VAS to record the postoperative pain 6 hours, 24 hours and 3 days after operation. Using the SPSS11.5, all clinical data,including ranked data were analyzed by Mann-Whitney-Wilcoxon test. Results 6 hours after the operation, the mean score of VAS in the piezosurgery group（3.98±2.16）was lower than that of the round bur group（4.79±1.95）with statistically significant difference. 24 hours after the operation, the mean score of VAS in the piezosurgery group（2.35±1.86）was lower than that of the round bur group（3.21±1.76）with statistically significant difference. Conclusion Compared with round bur, using piezosurgery can decrease the occurrence rate of postoperative pain in short term.