To provide a suction cup by adopting a suction surface, over from the lower end peripheral edge of a sucker main body to a space inner surface, as a pressing surface for pressing a skirt upper surace, and only a skirt inner surface as a suction surface without concerning vacuum suction; and moreover dividing the pressing surface into a required shape to make the suction cup finely followable to irregularities on the fitting surface of the suction end surface of a skirt; in the suction cup protruding an engaging spindle to the upper part center of a sucker main body and having the double structure suction surface inside.

In a suction cup (a), the lower end peripheral edge 2 of a sucker main body 1 and the lower end peripheral edge 5 of a skirt 4, internally provided on the recess-like suction surface 3 of the main body 1, are arranged in the same plane 6, and also many cuts are notchedly provided radially over the whole periphery of the edge 2, within the range of a space 7 formed between the inner surface of nearby the edge 2 of the main body 1 and the upper surface of the skirt 4.