Filter core with multiple filter layers integrated

The utility model discloses a filter core with multiple filter layers integrated. The filter core with the multiple filter layers integrated comprises an outer shell (1) which is made of hard foldable materials and a filter body (2) inside the outer shell (1). The outer shell (1) is an integrated box body wrapping material with holes formed in the upper surface and the lower surface, and the holing area in the outer shell (1) is smaller than the area of the upper surface and the lower surface. According to the filter core with the multiple filter layers integrated, the upper surface and the lower surface of the filter core are provided with holes, the integrated hard box body wrapping outer shell is arranged on the four edges of the filter core in an extending mode, so that the entire structure and the size are more stable. The filter core with the multiple filter layers integrated has the advantages of being complete in air purification, and long in service life.