The utility model provides a core sample classifys finishing device, core sample classifys finishing device includes: the receiver, the inner wall of receiver has the sliding tray that corresponds the setting, first baffle, perpendicular to sliding tray extending direction sets up in the receiver, and first baffle can be followed sliding tray extending direction and slided, fixed subassembly sets up on first baffle, and fixed subassembly can be fixed first baffle on the receiver. The beneficial effects of the utility model are that, setting up core sample classifys finishing device and can guaranteeing that every type of core sample can be intact in order, do not lost and damage, keep core sample's crude oil to distribute and the morphological feature, the laboratory analysis after for lays a good foundation.