Abstract: Objective：To discuss the effect of analgesia after perianal abscess operation on ropivacaine combined with small dose sufentanil for sacral block combined with electroacupuncture technology.Methods： 100 cases of perianal abscess patients in our hospital from January 2014 to January 2016 were selected as the object. According to the random number table，100 patients were divided into study group and control group，the control group was treated with ropivacaine combined with small dose sufentanil for sacral block treatment，the study group was treated with electroacupuncture on the basis of the control group.Results： For the two groups of patients on the day of surgery， postoperative 1st day， 2nd day， 3th day，7th day， the pain were compared. The results showed that in addition to the day of surgery the pain classification distribution of the two groups had no statistical significance(P>0.05)， on the other time point the pain grade of the study group was significantly better than the control group (P<0.05).Compared with the control group，the recovery time of lower limb muscle strength and the time of spontaneous micturition recovery of the study group both decreased and the difference was statistically significant (P<0.05). After anesthesia，the onset time of analgesia of the two groups of patients had no statistical difference(P>0.05). Compared with the control group，the study group patients′ duration of anesthesia and maximum motor block arrival time decreased and the difference was statistically significant (P<0.05).Compared with the control group， the burning reaction，feel abnormal rate of the study group decreased significantly and the difference was statistically significant (P<0.05). The long term adverse reaction incidence of the study group was significantly reduced and the difference had statistical significance (P<0.05). The satisfaction degree of patients in the study group was 92%，the control group was 74%， compared with the control group，the satisfaction of the study group was significantly higher (P<0.05).Conclusion： Ropivacaine combined with small dose sufentanil for sacral block combined with electroacupuncture for perianal abscess operation can achieve comfortable and effective analgesic effect after surgery，which has clinical application value.