High-filterability filtering membrane cylinder for cell slide preparation

According to the scheme, the high-filterability filtering membrane cylinder for cell slide preparation comprises a lower-layer membrane fixing piece, one end of the lower-layer membrane fixing piece is provided with an inlet allowing exfoliated cells and a liquid culture medium to flow into the lower-layer membrane fixing piece, the inner ring of the lower-layer membrane fixing piece is provided with a plane with an outlet for installing a lower-layer filter membrane, and the plane with the outlet is provided with air holes which are not blocked by an upper-layer filter membrane; the lower-layer filter membrane is arranged on the inner ring of the lower-layer membrane fixing piece; a plurality of through holes are formed in the end, facing the lower-layer film fixing piece, of the upper-layer film fixing piece, and the upper-layer film fixing piece is detachably connected with the lower-layer film fixing piece; the upper-layer filter membrane is arranged at one end, facing the lower-layer membrane fixing piec