The utility model discloses a gate-type ladder stand warning board which comprises a square frame. The width of the frame corresponds to that of a ladder stand, the height of the frame is three to four times longer than the distance between every two neighboring ladder steps, and four corners of the frame are fixed on the ladder stand through bolts; a warning label is arranged on the outer surface hinged to one side edge along the height direction of the frame, a stop plate for prompting the label is arranged on the inner surface hinged to the side edge along the height direction of the frame, and a limit strip used for limiting motion of the stop plate is hinged to the side edge of a hinged stop plate of the frame; a padlock ring is arranged on a side edge, opposing to the hinged stop plate, of the frame, and a padlock hole is arranged in the position, corresponding to the padlock ring, of the stop plate. The gate-type ladder stand warning board is simple in structure and convenient to use; the effect of security warning is achieved, a ladder stand channel can be opened or closed rapidly, and operation efficiency can be improved.