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Due to “the resistance wall of wave making”, the velocity of amphibious platform which sail in the state of drainage navigation with large square factor cannot be improved. For reducing resistance to improve velocity, the water-surface vector propeller of variable angle was presented based on imitating the basilisk lizard. The new mode of providing vector driving forces was realized by controlling blade angle and rotation velocity, and the new thought for improving the velocity of the platform was provided by increasing the output of lift and moment. Then, combined with the algorithm of PISO and transient analysis of two phase flow, the dynamic fluid model of propeller was set up to analyze the influence of movement and structure parameters on the driving properties. Finally, the results of numerical calculation were validated by tests. The results were shown as follows: when the blade angle was increased from 0° to 90°,，the angle of driving force was increased from -6.85° to 51.95° in continuous, and when the blade angle was in the interval of [40°, 60°], the driving forces can be provided in balance. The pressure of blade was increased with the increase of the spoke length, the lift was linear with the spoke length, and the thrust and moment were quadratic functions to spoke length. The output of driving forces was increased with the increase of rotation velocity, the frequency was four times of the rotation velocity at high and low velocities, but the frequency was two times of the rotation velocity at the velocity of 5r/s due to the low recovery ability. The lift was decreased with the increase of the width and diameter of the hub. The results provided a basis for controlling the driving output of the propeller and the sail of the platform.