Automobile bottom guard plate device

The utility model relates to the technical field of automobiles, in particular to an automobile bottom protection plate which comprises automobile body installation screw holes, auxiliary frame installation screw holes, drainage holes, a fluffy area, a middle layer and a compaction area. Vehicle body mounting points are positioned at four corners of the whole secondary periphery and are fixedly connected with a vehicle body; the auxiliary frame installation point is located on the outermost periphery of the whole and used for being fixedly connected with an auxiliary frame. The drain hole is located at the overall lowest position; the fluffy area is located below the middle layer, and the compaction area is located above the middle layer. The middle layer and the compaction layer provide the strength of the automobile bottom protection plate, and the fluffy layer has the functions of sound absorption and noise reduction due to the structural characteristics. The sound insulation and noise reduction door has a