The invention discloses an optical fiber storage device, namely, a rail clamping type optical fiber storage plate. The rail clamping type optical fiber storage plate comprises an optical fiber storage unit, a base and a clamping piece, wherein the optical fiber storage unit is installed on the base, the number of the optical fiber storage unit is at least one, the clamping piece is installed on the back face of the base, and the clamping piece is a U track clamping piece or a G track clamping piece or a U / G track universal clamping piece. A clamping foot of the clamping piece is used for being fixed on a 35mm U-shaped guide rail or a 35mm G-shaped DIN guide rail, and the rail clamping type optical fiber storage plate is conveniently installed and detached. The rail clamping type optical fiber storage plate is mainly used for an industrial machine (screen) cabinet with the DIN guide rail, redundant optical fibers can be arranged, collected and stored, and optical fiber line arrangement of the whole machine cabinet is standardized and orderly. According to the rail clamping type optical fiber storage plate, the number of optical fiber storage units can be flexibly increased or decreased according to the number of optical fibers stored by the machine (screen) cabinet on spot, operation is flexible, simple and convenient to conduct, the fault probability produced when equipment is connected with optical fibers can be reduced, the maintenance level is improved, and maintenance cost is reduced.