The invention relates to a built-in disk rack. The built-in disk rack adopts the technical scheme that the built-in disk rack comprises two parallel wallboards, wherein a disk device is embedded between the wallboards, an S station and a T station are arranged in the disk device, and shaft clamping mechanisms are respectively arranged at the S station and the T station; a cutter device and a feeding and discharging device are further arranged between the wallboards, and the cutter device and a feeding and discharging device are distributed on both sides of the disk device; and a plurality of guide rollers are respectively arranged above and below the cutter device, a disk driving device is connected to the disk device, and the disk device can be driven to rotate by the disk driving device so as to alternately receive and collect materials by the S station and the T station. The problems of difficulty in adjusting shafts of the structure of an existing built-in disk rack and inconvenience in feeding and discharging in the prior art are solved.