The present invention relates to a PP coating bumper regeneration treatment method of an automobile, and an object of the present invention is to improve the removal rate of the coating film during regeneration of a coated PP material bumper and to improve the physical properties of the PP coating bumper regeneration treatment method of a vehicle. In providing.;A characteristic of the present invention for achieving the above object is that the specific gravity of the coating film crushed when washing the pulverized product by washing, crushing and pulverizing the waste bumper by washing and sedimentation using the specific gravity difference of the coating film which is naturally separated in the grinding process. After sedimentation by tea, dehydration and drying were performed to mix and synthesize LDPE, thereby improving the film removal rate and improving physical properties without a separate process for removing the film.
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