Sound insulation EVA plate for automobile

The utility model is applicable to the technical field of automobile accessories, and provides a sound insulation EVA (ethylene vinyl acetate) plate for an automobile, which comprises a plate body component and a sound attenuation component, the plate body component comprises an outer plate part and an inner plate part, the outer plate part and the inner plate part correspond to each other, and the sound attenuation component comprises a sound attenuation plate, sound absorption cotton and a sound reflection plate; sound waves generated by external noise penetrate through the outer plate partand enter the silencing plate; firstly, the air enters the silencing cavity; when sound waves are propagated in the silencing cavity, the sound waves are attenuated; sound waves can be blocked and rebounded for multiple times through the arrangement of the sound reflection plate; the sound waves are rebounded into the outer plate part again; secondary absorption is carried out through the outer plate part; the frequency o