Abstract: The fluctuation of wind power output in the off-grid wind hydrogen system during hydrogen production can lead to frequent stop-stops of the electrolyzer, reducing its service life and hydrogen production efficiency. Therefore, it is necessary to adjust the operating status and power of the electrolyzer reasonably based on the wind power output situation. To effectively control the electrolyzer, a multi-objective rolling optimization (MRO) control method based on wind power prediction is proposed to control the electrolyzer of the wind hydrogen system. First, predict the wind power, perform a first-order differential operation on the predicted values, and determine the number of operating units for the electrolyzer based on the results. Then, a multi-objective fitness function is used to perform rolling optimization on the electrolyzer, balancing the electrolyzer's operating time, start-stop times, standby time, and fluctuating power. Finally, the power and operating status of the electrolyzer are sequentially allocated based on the real-time power situation. To verify the effectiveness of the proposed control method, compare it with the simple start-stop (SS) control strategy and the array rotation (AR) control strategy. The simulation results show that the proposed method has fewer start-stop times and higher hydrogen production in the electrolyzer, which can effectively improve the economy of the wind hydrogen system.