A vacuum extractor cup 2 for vacuum extractor delivery is provided which includes a cup portion 11 formed with a foldable and flexible material such as a sheet made of, for example, a vinyl material and in a cup-like shape with a sucking hole 13 on its bottom side and an extracting hole 14 on its opening side and includes a porous elastic member 12 formed with sponge. An extracting ring portion 16 has elastic force being larger than elastic force of a surrounding wall 15 in the cup portion 11. A convex / concave portion 17 is formed in an inner surface of the surrounding wall 15 in the cup portion 11 and the convex / concave portion 17 serves as a slipping-stop device between the cup portion 11 and porous elastic member 12.
