With the development of the personalized design for PDC bit, the traditional artificially exploratory method has the characteristics of low efficiency, long cycle, unstable quality, complex optimization and adjustment process, which is difficult to meet the demand of the design market of PDC bit. According to the shortcomings of traditional method and the requirements of high efficiency, high quality, easy to modify, a parameterized design platform of PDC bit was developed. From top to bottom, the frame of the design platform was divided into requirements analysis layer, designing and modeling layer, performance analysis layer and data output layer. Firstly, the whole platform structure and the operation interface based on Human-Computer Interaction were designed. Secondly, by analysis and comparing various cutter modeling methods, a completely parameter driven automatic modeling was used. Finally, after summarizing the traditional design methods and principles, a system with many modular design parts was designed. The results showed that the platform could improve the design efficiency and shorten the development cycle, reduced the labor intensity, ensured the design quality and the design results conformed with the demand of use. It has positive significance for promoting the research and service of PDC bit in China.