Abstract: In order to analyze the working condition of the wave power generation system in the actual sea area, obtain the maximum power point tracking (MPPT) control scheme accurately, reduce the dead zone and misjudgment of the control algorithm, this paper proposes the wave power generation system MPPT control scheme based on the double disturbance observation algorithm. Firstly, the hydrodynamics of the float in the wave power generation unit is analyzed, and then the output model of the permanent magnet linear synchronous wave power generation unit is constructed. Through the two-way complementary control of the two switched capacitors controlled by the double disturbance MPPT, the wave power generation system MPPT control is realized under the conditions of a regular wave, an irregular wave or the load changes. The simulation results show that, when the waves are put in and the loads are abrupt, double disturbance MPPT control method can effectively improve the maximum power tracking anti-interference and the robustness of the system and improve the power generation efficiency.