Fixed connection structure and connection method of rubber boat stern board

The invention discloses a fixed connection structure and a connection method of a rubber boat stern board, relates to the field of fixed connection of rubber boat stern boards, and provides the following scheme that the fixed connection structure comprises a mounting supporting seat bonded with a rubber boat and a stern board main body mounted on the mounting supporting seat, and the two ends of the mounting supporting seat are respectively connected with a connecting plate through bolts; the stern board comprises a stern board main body, two connecting plates are arranged in the stern board main body, buckle plates are hinged to the two connecting plates, locking mechanisms are arranged on the two connecting plates, limiting mechanisms are arranged on the locking mechanisms, a cavity is formed in the stern board main body, and a reinforcing mechanism and a sealing mechanism are arranged in the cavity. The installation supporting seat can be stabilized through contraction of the connecting plate and the buckl