Abstract: Digital agricultural machinery design and modeling technology has significant advantages and potential in enhancing agricultural production efficiency, optimizing agricultural production processes, reducing costs, improving product quality and promoting the development of smart agriculture. The paper focuses on the digital farm machinery design and modeling technology to carry out in-depth analysis, megawatt power supply to explore NX, CAD and digital twin technology, to explore the principle of the application of various technologies in the design, modeling and manufacturing process of agricultural machinery, the application of the application of the advantages and application of the characteristics of the technology, and through the case study to illustrate the limitations of various technologies in the process of digital modeling, and to further explore the digital farm machinery design and modeling technology in the development of The application prospects and challenges of digital farm machinery design and modeling technology in the development of intelligent agriculture, precision agriculture and sustainable agriculture are further discussed. The article aims to comprehensively demonstrate the current research and application status of digital agricultural machinery design and modeling technology, and provide theoretical and practical guidance for promoting the digital transformation of agriculture.