The invention provides a brake pad with the cooling function. The brake pad comprises a friction plate, a backboard, a water pump and a water storage tank. The friction plate is installed in a grooveof the backboard in an up-down slideable mode. A first cooling pipeline and a second cooling pipeline capable of allowing cooling water to flow are arranged inside the friction plate. The line lengthof the first cooling pipeline is smaller than that of the second cooling pipeline, and the pipeline diameter of the first cooling pipeline is smaller than that of the second cooling pipeline. According to the downward pressure borne by the upper surface of the friction plate, the brake pad cab selectively enter into a primary cooling mode or a secondary cooling mode; and when the brake pad entersinto the primary cooling mode, the cooling water can conduct primary cooling on the friction plate, and when the brake pad enters into the secondary cooling mode, the cooling water can conduct fast cooling on the friction plate.