The invention discloses a loading machine tire retreading structure. The loading machine tire retreading structure comprises an L-shaped support base, wherein a sleeve, a stand column and a direct current motor are arranged on the L-shaped support base, the sleeve penetrates through the stand column, a gear wheel is arranged at the end part of one end of the sleeve, a pinion matched with the gear wheel is arranged at the output end of the direct current motor, an expanded clamping part is arranged at the end part of the other end of the sleeve, a first cylinder is arranged in the sleeve, a connecting rod is connected at the output end of the first cylinder, a sliding block matched with the expanded clamping part is arranged at the end part of the connecting rod, a trapezoid-shaped slot is formed on a support rod, a bulge is formed on the output end of a second cylinder, the bulge is matched with the trapezoid-shaped slot, the second cylinder is arranged on the stand column, a tool support is arranged at one end of the support rod, a tool is rotationally arranged on the tool support, the motor is arranged in the tool support, the end part of the tool and the output end of the motor are both connected with bevel gears which are matched with each other, and a balancing weight is also arranged at the other end of the support rod.