In view of the issues in the practical teaching of the Digital Electronic Technology, which include outdated practical teaching content, insufficient innovation and comprehensiveness, redundant teaching methods, and a single assessment model, this paper proposes an optimized design for practical teaching content, teaching methods, and assessment mechanisms. The proposed plan adopts a deep integration of theory and practice, flexible expansion based on needs, a combination of multiple teaching models, and a comprehensive assessment mechanism. It adds design experiments and innovative research experiments to enhance the comprehensiveness and innovation of the practical teaching content. Various educational concepts and methods are integrated to form an optimized teaching method that combines multiple models. A comprehensive assessment mechanism is also designed. Through the optimized design of practical teaching courses for the Big Data Engineering, significant teaching achievements have been achieved. The proposed optimized practical teaching plan can effectively address the issues in practical teaching and better cultivate students’ overall quality and innovative spirit.