Cushioning unit and method for fabricating the same, and mattress, floor cushion, pillow and cushion using the same

A cushioning unit and a manufacturing method thereof are provided to obtain the momentum enlarging effect and decubitus preventing effect of the skin contact part using the elastic body. A cushioning unit comprises: a plurality of elastic bodies; and a connecting member interconnecting elastic bodies in the lattice type. The connecting member is formed by coating iron lines(30a,30b) in which the surface is smoothly processed. Coating iron line comprises an iron line for the traverse connecting and an iron line for longitudinal connecting. The elastic body is made of urethane or the rubber. A plurality of protrusions for finger pressure are formed in the elastic body surface. The coating iron line is formed by applying specially synthesized material on the copper wire or the iron wire.