Objective To evaluate the effect of transcutaneous electrical acupoint stimulation (TEAS) before anesthesia induction on postoperative analgesia in general anesthesia operation. Methods The database was searched from ScienceDirect, Pubmed, Cochrane Library, Web of Science, Embase, CNKI, Wanfang, VIP, and Chinese Biomedical Database from the establishment of the database to November 2021. Randomized controlled trials (RCT) on applying TEAS before anesthesia induction to postoperative analgesia were collected. All data were extracted for statistical analysis by using RevMan 5.3 software. Results A total of 820 patients were included in 10 references, including 409 in the TEAS group and 411 in control group. Meta-analysis showed that, compared with control group, VAS pain score were significantly lower at 4, 12, 24 and 48 hours after surgery in the TEAS group (4 hours after surgery, MD = -1.45, 95% CI -2.69 to -0.20, P = 0.02; 12 hours after surgery, MD = -0.50, 95% CI -0.98 to -0.02, P = 0.04; 24 hours after surgery, MD = -0.75, 95% CI -1.10 to -0.40, P < 0.01; 48 hours after surgery, MD = 0.38, 95% CI -0.74 to -0.02, P = 0.04), and the incidence of postoperative nausea and vomiting were significantly reduced in the TEAS group (OR = 0.35, 95% CI 0.24 to 0.51, P < 0.01). There was no statistically significant difference in intraoperative opioid dosage between the two groups. Conclusion Using Transcutaneous electrical acupoint stimulation before anesthesia induction can significantly improve the efficacy of postoperative analgesia, reduce the incidence of postoperative adverse reactions. |