The invention relates to a rice leaf shape collection device and a method for extracting rice leaf shape parameters. A rice leaf shape collection device, its main body includes a camera, a camera fixing device, a bracket bar, a leaf loading platform, a bracket vertical bar, a bracket regulator, a computer, a check paper, double-sided adhesive tape, and a black tape; the camera is fixed through the camera The device is fixed on the horizontal bar of the bracket; the leaf loading table is a black horizontal tabletop, and the black tape is pasted on the leaf loading table with double-sided adhesive tape, and the side with the glue is facing upward; the vertical bar of the bracket is fixed on the side of the leaf loading board. In the center, the distance between the camera and the table can be adjusted through the bracket adjuster; the camera is directly connected to the computer; the verification paper is a piece of white paper with black equidistant grid points. Using the device and method of the present invention to collect rice leaf shape images and extract rice leaf shape curves and leaf areas is convenient, fast and accurate, and provides hardware and methods for the extraction of rice leaf shape and parameters, and can be used for the simulation and optimization of rice plant shape The design provides the basic parameters.