The invention relates to a sightseeing boat roof, and particularly relates to a sightseeing boat roof and a preparation method thereof. The sightseeing boat roof comprises a promenade deck, a supporting assembly and a fiberglass roof; the promenade deck and the fiberglass roof are positioned by virtue of the supporting assembly; the supporting assembly comprises a supporting channel steel frame, the upper part and the bottom of the supporting channel steel frame are respectively provided with a column skeleton benchmark plate, the column skeleton benchmark plate at the upper part of the supporting channel steel frame is fixed to the fiberglass roof, and the bottom column skeleton benchmark plate at the upper part of the supporting channel steel frame is fixed to the promenade deck; a plurality of column skeletons are arranged on the periphery of the supporting channel steel frame, and the upper part and the bottom of each column skeleton are respectively fixed to the column skeleton benchmark plate; and each column skeleton is coated with leather. The sightseeing boat roof and the preparation method thereof are high in structural compactness, and capable of improving the application performance and prolonging the service life.