The invention discloses a 3D printer consumable ABS and PLA recirculation utilization system. The 3D printer consumable ABS and PLA recirculation utilization system comprises a base and further comprises a recycling device and a wire body butt-joint device which are arranged on the base. The recycling device is used for raw material melting and wire body extrusion forming. The wire body butt-jointdevice is used for butt joint of two wire bodies. After consumables are melted through the recycling device and wire body extrusion forming treatment is conducted, the wire body butt-joint device isused for conducting butt joint and conveying the wire bodies to a winding device for winding. The wire body butt joint device comprises a first wire guiding mechanism, a second wire guiding mechanismand a hot connecting area A arranged between the first wire guiding mechanism and the second wire guiding mechanism. Each of the first wire guiding mechanism and the second wire guiding mechanism comprises a wire feeding mechanism used for guiding the wire bodies to advance, the wire feeding mechanism arranged in the first wire guiding mechanism can convey the wire bodies to move in the directionfrom the first wire guiding mechanism to the hot connecting area A, and the wire feeding mechanism arranged in the second wire guiding mechanism can convey the wire bodies to move in the direction from the second wire guiding mechanism to the hot connecting area A or move in the direction from the hot connecting area A to the second wire guiding mechanism.