To meet the requirements for a wide field of view in vehicle-mounted LiDAR systems, a beam scanning system based on micro-motion non-uniform array microlenses has been designed. This system adopts a biomimetic field of view design and incorporates a scanning structure of microlenses and refractive prisms to effectively segment and stitch the wide field of view. By designing the spatial distribution of the microlenses and refractive prisms, a seamless connection of the field of view is achieved. The deflection of the beam is accomplished by the slight displacement of the microlenses and refractive prisms driven by piezoelectric ceramics, completing the scanning of the optical system over a wide field of view. The working wavelength of the scanning optical system is 905nm, and when the displacement of the piezoe-lectric ceramics is 200gm, the horizontal field of view is 112. 5°, and the vertical field of view is 25°. The root-mean-square (RMS) radius of the exit beam is less than 0. 277", and in areas of high resolution, the RMS radius is less than 0.081 *. This solution offers the advantages of compact size, large scanning field of view, and high central resolution,providing a reference for the miniaturization of vehicle-mounted LiDAR scanning systems.