The invention discloses a wind power and sea wave power generation device and belongs to the technical field of sea wave power generation. The wind power and sea wave power generation device comprisesfloating barrels, a connecting rod, a rotary support rod, a power generation box, a permanent magnet, a coil, a base, a bearing and wind power generation devices. The left floating barrel and the right floating barrel are fixedly connected through the connecting rod and placed on the sea surface. The rotary support rod is vertically and fixedly connected to the position, close to the left side orthe right side, of the middle of the connecting rod, moves through an upper bearing arranged on the upper portion of the power generation box and a lower bearing arranged on the base and is insertedinto the bottom end of the base. The part, inside the power generation box, of the rotary support rod is fixedly provided with the coil. The permanent magnet is arranged at the periphery of the coil.The wind power generation devices comprise the left wind power generation device and the right wind power generation device. The left wind power generation device comprises a power generator, a fairing and vanes. The fairing is fixedly mounted on the upper portion of the left floating barrel. The vanes are mounted in the fairing and connected with the power generator through a rotating shaft. By means of the wind power and sea wave power generation device, wave energy can be transformed into electric energy, and wind energy can also be transformed into electric energy; and the device is simplein structure and convenient to mount.