The role of innovative design in mechanical design is very important, but there are problems that innovative design cannot be realized. Ordinary methods cannot solve the problem of innovative design in mechanical design, and the design is not reasonable. Therefore, this paper proposes a CAD method for innovative design analysis. First, artificial intelligence is used to analyze the design scheme, and the indicators are divided according to the requirements of innovative design to reduce innovative design in the interfering factor. Then, artificial intelligence identifies the innovative design of the machine, forms an innovative design scheme, and conducts the innovative design results Comprehensive analysis. MATLAB simulation shows that under certain evaluation criteria, the feasibility of CAD methods for innovative mechanical design, The rationality of innovative designs is superior to ordinary methods.