The utility model discloses a carbon teminal angle cutting auxiliary fixtures, comprises a workbench, the top fixed mounting of workstation has the fixed plate, one side of fixed plate is equipped with the alive movable clamp plate of slidable mounting at the workstation top, there are first anchor clamps and second anchor clamps in one side that fixed plate and the movable clamp plate that livesare close to each other fixed mounting respectively, one side fixed mounting that the movable clamp plate that lives kept away from the second anchor clamps has movable support alive, and lives movable support and be the L structure that appears, the first chamber of placing has been seted up on the workstation, fixed mounting has the pneumatic cylinder on first one side inner wall of placing thechamber, and the piston rod fixed mounting of pneumatic cylinder has movable post. The utility model discloses simple structure, the practicality is strong, and carbon teminal angle clamping position's is more firm, can effectively avoid not resulting in the carbon teminal angle to take place the skew in cutting process because the centre gripping is infirm, and not only the quality of product hasobtained the guarantee, has saved the time in addition, has improved work efficiency, has satisfied people's user demand.