PROBLEM TO BE SOLVED: To provide a presser material for bilayer in which rigidity of two rows of vertical parts is improved not to expand outward when a screw is screwed so that holding force is increased to the screw to be capable of surely and stably fixing an outside hard film by a presser material.SOLUTION: A fixing member for double layered hard film comprises: a presser material 20 for bilayer which is screwed and fixed to a rafter material of an agricultural greenhouse to stretch an inner hard film f1； and a presser material 13 which is screwed and fixed to the upper side of the presser material 20 for bilayer to stretch an outer hard film f2. The presser material 20 for bilayer comprises: a bottom surface part 23 and right and left legs 22 which hold the inner hard film f1 by pressing the inner hard film f1 on the upper surface of the rafter material； two rows of vertical parts 24 which are extended from the bottom surface part 23 upward and in parallel with each other； and a middle bottom part 25 which is formed between the two rows of vertical parts 24 and connects the two rows of vertical parts with each other, and a screw is screwed into the middle bottom part of the presser material 20 for bilayer.SELECTED DRAWING: Figure 3
