The present invention discloses a multi-functional rainproof brake pull rod. The multi-function rainproof brake pull rod comprises a rod body, a handle and a brake pull hook; the rod body is composed of more than one rod section; the handle is arranged at the bottom end of the brake pull rod; the top end of the brake pull hook is perpendicular to the rod body; one end of the brake pull hook is provided with a wrench; and an umbrella-shaped rain cover is arranged above the joint of the handle and the rod body; and the umbrella-shaped recess of the rain cover faces the handle. The multi-functional rainproof brake pull rod can be assembled on site, and the length of the multi-functional rainproof brake pull rod can be adjusted, and therefore, the multi-functional rainproof brake pull rod is convenient to carry. The umbrella-shaped rain cover is arranged above the handle at the bottom end of the brake pull rod, so that the hidden danger of electric leakage caused by rainy weather can be avoided, therefore, the safety of field operation can be greatly improved. The brake pull rod is provided with the wrench, so that the staff of a power supply station can be assisted at any time to solve unexpected problems, and therefore, the multi-functional rainproof brake pull rod has high practicability.