In order to improve the efficiency and accuracy of the design of hydraulic offset disc harrow, under the guidance of the mass customization theory, the VB language was used as the development tool, SolidWorks 2017 was used as the development platform, the system modular design technology and objectoriented parametric technology were introduced into the variant design of offset disc harrow. The hydraulic offset disc harrow parametric design system was developed by integrating parametric design technology, assembly sketch technology and engineering drawing adjustment technology. By using this system, the product development and improvement cycle can be shortened, and new products can be developed efficiently and cheaply, so that the production of hydraulic offset disc harrow can respond quickly to the personalized market requirements