Abstract: A string-pulling device of a racket-stringing apparatus, including a housing, a driving unit, a string-pulling head, a control box and a memory. The driving unit is arranged in the housing. The driving unit includes a collective circuit. The string-pulling head mounted on one side of the housing and rotationally drivable by the driving unit. The control box is detachably mounted on the housing. A main circuit is arranged in the control box for controlling and driving the driving unit. The main circuit is electrically connectable with the collective circuit of the driving unit for controlling and driving the driving unit. A control panel is disposed on the control box. The control panel has several control buttons corresponding to the main circuit for controlling the main circuit.

Abstract: A string pulling head structure of a racket stringer, including a first string chuck and a second string chuck fixed with each other and a first chucking plate and a second chucking plate disposed between the first and second string chucks. Each of the opposite faces of the first and second string chucks and the first and second chucking plates is formed with two parallel slots. An antiwear slat is disposed on one side of each of the slots to serve as the bottom of the slot. The slats are inclined by equal inclination angle but in reverse direction, whereby the depths of two ends of the slots are unequal to each other.