Slot type framework used for fixing circuit board

The invention discloses a slot type framework used for fixing a circuit board. The slot type framework structurally comprises a cylindrical framework main body, wherein instrument framework protection plates are arranged at two ends of the cylindrical framework main body, with respect to the diameter direction of the cross section of the cylindrical framework main body; a circuit board slot which is used for the insertion of the circuit board and is adaptively matched with the thickness of the circuit board is arranged at the upper end of each instrument framework protection plate, with respect to the axial direction of the framework; and a circuit board pressing plate fixing device is arranged at the lower end of each instrument framework protection plate. By adopting the technology that slots are arranged at one end of each of the two side plates of the framework based on the thickness of the circuit board, the circuit board is inserted into the slots, the circuit board is fixed at the other end of each sid