Elastic floor structure able to reduce floor retraction gap

The utility model discloses an elastic floor structure able to reduce floor retraction gaps. A groove structure is processed at the lower part of a floor rabbet in advance by the utility model; hot melt adhesive strips PUR are filled in the groove; meanwhile, the rabbet structure of bicomponent macromolecular materials is formed by the deformation, the expansion and contraction of the hot melt adhesive strips PUR and the plasticity of a split joint of a mortise structure of the floor through the match of the groove structure and a convex structure by the floor rabbet and the groove, the groove is positioned on the mortise structure and the effects of the split joint with elastic expansion and contraction can be realized. The utility model overcomes the problems in the prior art of retraction gaps which is caused by the dimensional changes, etc. The utility model strengthens the convenience of the installation and the use of the floor.