Provided is a thin sheet clamping device, consisting of a frame extruded profile (10) and a press strip extruded profile (11) connected by a bolt (12) and a nut (13), wherein paired clamping ends (102, 112) on the frame extruded profile (10) and the press strip extruded profile (11) bite tightly, at least one of the clamping ends (102, 112) is provided with a serrated structure (15), a fastening margin is provided between a first fixing portion (101) on the frame extruded profile (10) and a second fixing portion (111) on the press strip extruded profile (11), and a thin sheet (14) is clamped. Also provided is a novel greenhouse, comprising a greenhouse framework (16) and a plate material (17), the plate material (17) being polycarbonate transparent thin sheets, the greenhouse framework (16) consisting of combination extruded profiles (161) which are connected and fixed to one another, the combination extruded profiles (161) comprising connecting portions and thin sheet clamping device portions. When assembled, the four sides of each polycarbonate transparent thin sheet are clamped and fixed in a level manner by the combination extruded profiles (161), thereby solving the problem that thin sheets such as polycarbonate transparent thin sheets lack sufficient rigidity and are difficult to clamp and utilise in a level manner.Linvention concerne un dispositif de serrage de feuilles minces, constitué dun profilé extrudé de cadre (10) et dun profilé extrudé de bande de pression (11) reliés par un boulon (12) et un écrou (13), dans lequel des extrémités de serrage (102, 112) jumelées présentes sur le profilé extrudé de cadre (10) et sur le profilé extrudé de bande de pression (11) mordent étroitement, au moins lune des extrémités de serrage (102, 112) étant munie dune structure dentée (15). Une marge de fixation est créée entre une première partie de fixation (101) ménagée sur le profilé extrudé de cadre (10) et une seconde partie de fixation (111) ménagée sur le profilé ex
