Anti-freezing step ladder for outdoor swimming pool of ro-ro passenger ship and mounting method of anti-freezing step ladder

The invention discloses an anti-freezing step ladder for an outdoor swimming pool of a ro-ro passenger ship and a mounting method of the anti-freezing step ladder, relates to the field of ship auxiliary equipment, and solves the problem of icing of the step ladder of the swimming pool from the source. The technical scheme is that the step ladder is mounted on a deck on the outer side of the swimming pool, a plurality of step-shaped pedals are arranged on the step ladder, and water flowing grooves are formed in the surfaces of the pedals; heating channels are formed in the bottoms of the pedals, the heating channels in the adjacent pedals are communicated with each other, first heat tracing cables are laid in the heating channels, inlets of the heating channels are connected with a water outlet of the swimming pool through pipelines, and outlets of the heating channels are connected with a water inlet of the swimming pool through a circulating heating device; a water circulation system of the swimming pool is