The utility model provides a strong-wind-resistant street lamp post advertising board which comprises an advertising frame and is characterized in that the advertising frame is installed on a street lamp post through a connecting device, and the connecting device is connected with the advertising frame through a hinge; a cylindrical cam mechanism is arranged at the hinged part of the connecting device and the advertisement frame; the advertising frame can be kept in a static state in weak wind and can rotate when wind power reaches a certain strength, so that the wind area and the stress of the advertising board are reduced, damage is avoided, the advertising board can automatically return to the original position after the wind power is weakened, and the advertising board has the advantages of simple structure, good wind resistance and the like.