The utility model relates to a brake structure of four wheel driving assistance,It is provided with a four-wheel driving aid handle,By tightening the brake line and applying the brake pads,The brake structure comprises a base,One end of the four wheel assist handle is sheathed and fixed,The base includes a holding space；One pull part,The utility model comprises a set of setting holes and a brake line hole；A rotating part,Including a connecting unit and at least one convex block；A fixed element；A hollow grip,One end is connected,The connecting end is a connecting unit corresponding to the rotating part,Among them,Both the pulling part and the rotating part can be placed in the holding space.Therefore, by rotating the hollow grip or press piece, and driving the rotating part to rotate and the pulling part to move, the brake structure of the four-wheel driving aid in this invention can tighten the brake line and make the brake pad on the brake act on the wheel, so as to achieve the effect of becoming an easy to operate brake structure.一種四輪助行車之煞車結構，其係設置於四輪助行車把手，透過拉緊煞車線並使煞車片作用，該煞車結構包含：一基座，套設並固定於四輪助行車把手之一端，該基座並包括一容置空間；一拉動部，包括一套設孔與一煞車線孔；一轉動部，包括連接單元與至少一凸塊；一固定元件；一中空握桿，其一端係為連接端，該連接端係對應於該轉動部的連接單元，其中，該拉動部與該轉動部皆可容置於該容置空間。因此，本創作四輪助行車之煞車結構藉由轉動該中空握桿或按壓件，並帶動轉動部轉動以及拉動部移動，來拉緊煞車線並使煞車器上的煞車片作用於輪子，以達到成為容易操作的煞車結構之效果。
