Background: The role of wound-edge protection devices (WEPDs) in wound infection prevention is still controversial. The aim of this meta-analysis was to assess the protective efficiency of WEPDs in gastrointestinal surgery in a pooled analysis of randomized controlled trials. Materials and methods: A variety of sources were searched for randomized controlled trials evaluating the protective efficiency of WEPDs in gastrointestinal surgery. Subgroup analysis and meta-regressions were conducted to investigate the possible influence of the type of WEPD on the size of intervention effect. This review was conducted in accordance with a prespecified protocol based on the guidance of the Cochrane Handbook and Preferred Reporting Items for Systematic Reviews and Meta-analyses statement. Results: Sixteen studies with 3663 patients were included. The WEPDs usage led to a significant decrease in surgical wound infection (risk ratio [RR] = 0.64; 95% confidence interval [CI]: 0.46-0.87; P = 0.005; I-2 = 63%), with the dual-ring design usage yielding a more significant reduction in surgical wound infection (RR = 0.24; 95% CI: 0.11-0.50; P = 0.0002; I-2 = 29%), whereas the single-ring design usage yielding a nonsignificant result (RR = 0.78; 95% CI: 0.58-1.04; P = 0.09; I-2 = 53%). Conclusions: Double-ring WEPD, but not single-ring design, reduces wound infection rate significantly in gastrointestinal surgery. Therefore, the use of single-ring WEPD should be reconsidered. (C) 2016 Elsevier Inc. All rights reserved.