The fine simulation model of the complete multiple unit (MU) train is a professional-level training aid designed for rail transit vocational colleges and railway-related majors. It precisely replicates the parameters of real mainline MU trains, providing a tangible teaching medium for core courses such as vehicle construction, MU maintenance, rail transit operation management, and high-speed rail passenger service. This model addresses the teaching pain points of traditional classrooms, including abstract theories, limited real-machine training, and high on-site safety risks. The model accurately replicates all components from the external streamlined body, head design, and logo painting to the internal driving console, passenger compartment interior, running gear, coupler buffer, braking system, pantograph, and door mechanism, with high detail accuracy and clear component zoning, facilitating teachers' structural cognition teaching. The entire set of teaching aids adopts a modular design approach, allowing for flexible adjustments in scale and length according to the size of the college's training room, professional direction, and budget plan. It supports various customization options, including fixed complete vehicle versions, segmented disassembly versions, and transparent anatomical display versions. The main frame of the model is constructed with high-strength steel structure, with multiple layers of anti-corrosion coating on the surface, and durable engineering materials for interior components, balancing appearance simulation effects with long-term repeated training durability. It is suitable for all-weather teaching in the training room. Relying on this complete vehicle simulation model, students can closely observe the assembly logic of the complete MU train, familiarize themselves with the connection relationships between various systems, and no longer be limited to textbook images and two-dimensional courseware, establishing a complete spatial cognition of the complete vehicle. Teachers can use the teaching aids to conduct teaching on complete vehicle structure, component identification, and assembly sequence, accompanied by supporting training worksheets and teaching guides. This aligns with the talent training program for rail transit majors, helping colleges and universities build standardized MU training rooms, consolidate students' professional foundations, improve the quality of practical teaching in rail transit majors, promote the implementation of industry-education integration, and cultivate skilled talents with basic cognition of complete vehicles for the rail transit industry.