Abstract: An introduction is made in the paper to the make-up of the parametrized spatial surface chute design system, and the flowsheet and advantages of the design system. Result of the design of the spiral chute for use in the coal storage silo of Hongjingta No.1 Mine indicates that the time cycle of parametrized design can be shortened to less than one-fifth of that required for the design with conventional method, and less time and labor are required for the checking of the design. While increasing working efficiency, the quality of the drawings is improved as well, beneficial to the improvement of the quality of designed product.