This invention proposes an aid for prevention of wound dehiscence, which is highly effective in preventing the dehiscence of an incised wound inflicted on a body by cutting, and is easy to use and manipulate in particular this aid for preventing an incised wound caused to a part of a body by incision from splitting open by covering the wound and wound-surrounding tissues, is made up of a dehiscence preventive member adapted to cover up the wound and the wound-surrounding tissues, a plurality of a holding member adapted to hold the dehiscence preventive member closely upon the wound and the wound-surrounding tissues, and a contraction preventive member having a capacity of keeping the dehiscence preventive member suitably expanded in a dehiscence direction and of preventing the expanded dehiscence preventive member from contracting and said dehiscence preventive aid is unique in that the aid is adapted to effect such that a contraction distance of the dehiscence preventive member in the dehiscence direction which is determined in response to the application of the dehiscence preventive member is equal to or greater than a contraction distance of the holding member in the dehiscence direction which is determined in response to the application of the holding member, and in that the dehiscence preventive member is adapted to be closely applied to the wound and the wound-surrounding tissues after being expanded in the dehiscence direction in a manner such that the contraction distance of the dehiscence preventive member in the dehiscence direction which is determined in response to the application of the dehiscence preventive member is equal to or greater than the contraction distance of the dehiscence preventive member in a direction normal to the dehiscence direction which is determined in response to the application of the dehiscence preventive member, and in that the contraction preventive member is removed after the dehiscence preventive member is applied by being f
