The acoustic felt production line processes staple fibers, waste fibers, glass fibers, foam particles and other raw materials into special acoustic felts with flat, dense texture and outstanding sound insulation performance via unpacking, blending, opening, airlaid forming, hot-melt entanglement, cooling and cutting forming processes. It meets acoustic demands for automobile front fenders, cockpit floors, trunk floors and other parts, integrating sound insulation, vibration damping, flame retardancy and eco-friendly features. It supports large-scale continuous production and customized specification adaptation, serving as core complete equipment for manufacturing automotive interior acoustic materials.