The invention discloses a maritime solar polar plate mounting structure. The mounting structure is characterized by comprising fan tower frames, tower frame limiting buckles, main ropes, main rope lantern rings, a solar polar plate and polar plate lantern rings. The tower frame limiting buckles are fixedly mounted at two sides of two constructed maritime fan tower frames. The main ropes are mounted on the tower frame limiting buckles at the same sides of the two fan tower frames through the main rope lantern rings. The main rope lantern rings and the tower frame limiting buckles are connected in an engagement mode. A main rope platform is set up between the two main ropes. The solar polar plate is mounted on the main rope platform through the main rope lantern rings and the polar plate lantern rings. The main rope lantern rings and the polar plate lantern rings are connected in the engagement mode. According to the mounting structure, the solar polar plate is set up with the help of existing fan tower frame foundations, a structure is simple, and investment costs are reduced. According to the structure, wind power generation and solar power generation are combined, ocean energy is developed to a great extent, and energy complementation is realized.