<;P>;PROBLEM TO BE SOLVED: To provide an apparatus for fixing sheets for a plastic greenhouse, enabling sheets to be multiply set up, and also usable for holding fasteners for fitting bands to prevent the sheets from flapping or the like. <;P>;SOLUTION: The apparatus for fixing sheets includes a long-length supporting frame 1 with a narrow opening composed of a horizontal bottom frame 1A and a pair of side frames 1B and 2C standing inclinedly from both sides of the bottom frame 1A obliquely inside, a press frame 2 engaged in the long-length supporting frame 1 and sandwiching sheets S by it and the long-length supporting frame 1, and a pressing member 3 placed on the press frame 2 and pressing the press frame 2 against the inner wall of the long-length supporting frame 1. In this apparatus, the press frame 2 is composed of a bottom plate 4, an inclined piece 5 standing from the end of the bottom plate toward its oblique inside, and a groove frame 6 collocated on the inclined piece 5. Further, a first groove 7 along the longitudinal direction is formed in between the bottom plate and the inclined frame 5, and a second groove 8 along the longitudinal direction is formed inside of the groove frame 6. <;P>;COPYRIGHT: (C)2009,JPO&INPIT