Disclosed are a rendering method and system for a focused light field camera. The method comprises: S1. inputting a picture photographed by a focused light field camera, and recording position information and central positions of each microlens and each sub-aperture image; S2. computing a depth of field of a planar image to be refocused, and determining a radius R according to the depth of field; S3. extracting a regular hexagon region block having the radius R at the central position of each sub-aperture map; S4. tiling and combining the regular hexagon region blocks in the order of the sub-aperture images to obtain a combined image; and S5. processing the combined image to obtain a final rendered image. By using a hexagon arrangement characteristic of a microlens array and extracting regular hexagon region blocks from sub-aperture images of microlens, the method does not need coordinate system conversion during a rendering process, so that the computational complexity of the rendering method for a focused light field camera can be effectively reduced.