A tube fastening structure for fastening a tube in a radiant floor heating system, the tube fastening structure comprising: a bottom layer configured to be fixed on ground, the bottom layer having a surface of loop members; and at least one fastening element having a first surface provided with a plurality of hook members thereon and a second surface opposite to the first surface and provided with loop members thereon, the plurality of hook members configured to be mechanically fastened to the surface of the loop members of the bottom layer, wherein the fastening element includes a connecting body portion and two wing portions on two opposite sides of the connecting body portion, the connecting body portion is configured to be mechanically fastened to the surface of the loop members of the bottom layer by the plurality of hook members, and the two wing portions are configured to surround on an outer circumference surface of the tube; and each of the two wing portions has a fixed end and a free end, the fixed end is connected to the connecting body portion, the two free ends of the two wing portions are configured to be mechanically fastened to each other by the plurality of hook members on the first surface of the free end of one of the two wing portions and the loop members on the second surface of the free end of another wing portion of the two wing portions so as to fasten the tube, characterized in that the connecting body portion and the two wing portions are formed integrally; and the connecting body portion has a central part and two extending parts respectively extending outwardly from the central part in a direction toward the free end of the corresponding wing portion; wherein the free end of each of the two wing portions is detachable from the corresponding extending part of the connecting body portion. a bottom layer configured to be fixed on ground, the bottom layer having a surface of loop members; and at least one fastening element having a first surface provided with a plurality of hook members thereon and a second surface opposite to the first surface and provided with loop members thereon, the plurality of hook members configured to be mechanically fastened to the surface of the loop members of the bottom layer, wherein the fastening element includes a connecting body portion and two wing portions on two opposite sides of the connecting body portion, the connecting body portion is configured to be mechanically fastened to the surface of the loop members of the bottom layer by the plurality of hook members, and the two wing portions are configured to surround on an outer circumference surface of the tube; and each of the two wing portions has a fixed end and a free end, the fixed end is connected to the connecting body portion, the two free ends of the two wing portions are configured to be mechanically fastened to each other by the plurality of hook members on the first surface of the free end of one of the two wing portions and the loop members on the second surface of the free end of another wing portion of the two wing portions so as to fasten the tube, characterized in that the connecting body portion and the two wing portions are formed integrally; and the connecting body portion has a central part and two extending parts respectively extending outwardly from the central part in a direction toward the free end of the corresponding wing portion; wherein the free end of each of the two wing portions is detachable from the corresponding extending part of the connecting body portion.