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To evade predators, basilisk lizards can run across water surface with rolling pelvic to drive foot movement. Based on the mechanism of high-speed air-water interface movement, bionic water-surface vector propeller was designed according to bionic object basilisk lizards. With providing lift, thrust and moment, dimension of driving force was increased. For controlling the output of driving force, the influence of structure parameters on mechanical property was analyzed. Combined with standard k—ε turbulence function and PISO algorithm, fluid dynamics model of bionic propeller was established to calculate the mechanical properties of vector propeller with different parameters. By analyzing the changes of mechanical characteristic curve with time, it was found that threedimensional driving forces presented periodical variation. And the frequencies of driving forces were four times as much as those of rotation velocity. From comparison of the threedimensional mechanical properties, the optimal axisshape and diametershape of blade were obtained. Meanwhile, the functions between driving force and length and width of blade were derived with data fitting. By analyzing the distribution of impeller pressure and water volume, solid—liquid mutual action of impeller rotating at watersurface was presented. Finally, the experiment system of vector propeller was set up and the computed force was consistent with experiment result in general, therefore it was validated that the numerical calculation model was correct. In hydroplaning state on the surface of water, the resistance of high speed boat can be reduced and the top speed can reach 80km/h. For transforming navigation state, a new amphibious vehicle with a pair of vector propellers mounted in the rear part was presented. Hydroplaning state of amphibious vehicle with pitch angle of 10.6° was realized, and the design provided a new thought for reducing resistance and improving velocity for water-surface device.