The work aims to enhance the application of computer-aided technology in equipment design and provide theoretical support for equipment design quality and design efficiency. Based on the academic resource database represented by CNKI, the related literature was downloaded and sorted out to analyze the key technologies, research directions and related applications of the existing digital design technologies in equipment design and elaborate the development history of equipment design and computer-aided design technologies, the current status of the application of CAD/CAE/ CAM technologies in equipment design, the problems to be explored and the specific case applications in different equipment design fields. In addition, the development trend of the in-depth integration of computer-aided technology in equipment design was expounded in detail. CAD/CAE/CAM has made significant progress in the field of auxiliary equipment design, and has become an indispensable tool in modern equipment design. By analyzing the development trend of the in-depth integration of computer-aided technology in equipment design, the research direction and development trend are further synthesized and summarized from the key technological directions of the integration of virtual reality (VR) and augmented reality (AR) technology, computer-aided collaborative design and full life cycle management, computer multidisciplinary co-simulation and digital twins, etc., thus providing reference and basis for future designers to cope with the adjustment of the complex equipment design.