The present invention discloses a tin plating copper wire continuous stretching apparatus, which comprises a work table, a bottom plate, a bracket, nuts, a lower mold, an upper mold, springs, a screw rod, a high-power motor, an output gear, a rotation shaft, and hydraulic snapping jaws. Compared with the apparatus in the prior art, the tin plating copper wire continuous stretching apparatus of the present invention has the following characteristics that: the hydraulic snapping jaw clamps one end of a copper wire, the screw rod rotates and downward presses the upper mold so as to make the upper mold and the lower mold be closed, the high-power motor is started and drives the output gear to rotate so as to drive the rotation shaft to rotate, and the hydraulic snapping jaw rotates along with the rotation shaft, the hydraulic snapping jaw clamps the copper wire when any one of the hydraulic snapping claws rotates to the left end while the previous hydraulic snapping jaw is released and rotates along the rotation shaft so as to complete the copper wire stretching processing. According to the present invention, a plurality of the hydraulic snapping jaws are arranged in the apparatus, such that the rotation circulation stretching of the copper wire is achieved under the rotating driving of the rotation shaft so as to achieve continuous processing and improve production efficiency.