A sea wave power generation device. The power generation device comprises a kinetic energy receiving device (1), an air pressure adjustment device (2), a kinetic energy transmission device (3), and a kinetic energy power generation device (4). The air pressure adjustment device (2) comprises a torsion measuring device (21), a pneumatic device (22), and inlet and outlet water pipes (23). The kinetic energy transmission device (3) comprises a fixed base (31), a fixed pile (32), a slide rail base (33), a rotating ball (34), a trapezoidal toothed plate frame (35), and a gear set (36). A driven gear (3612) and a second driving gear (3621) transmit, by means of a power output bearing (5), rotating power to the kinetic energy power generation device (4) for operation and power generation. The sea wave power generation device is applicable to a variety of wave shapes, has improved stability and anti-shock capabilities, greatly shortens a maintenance cycle, and greatly reduces maintenance costs, thereby extending the service life of a large sea wave power generation device, effectively preventing the case in which a large torque difference when the power generation device is subjected to impact of sea waves, and allowing the sea wave power generation device to generate power smoothly in two directions, i.e., ascending and descending.
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