To provide an apparatus for simultaneously piercing plural holes which is used for simultaneously piercing plural holes in a conical face and cylindrical face of a conical or a cylindrical sheet metal cup and can perform simultaneous piercing with a small number of components of the apparatus even when the number of holes to be pierced is increased thereby eliminating the problem of an arrangement space of the components.

Grooves 35 of a crisscross section, in which a platy cam slider 29 mounted with a piercing punch 30 to its tip is fitted, are radially arranged in a cylindrical groove block 32 in plural, by moving the cylindrical groove block 32 vertically, plural piercing punches 30 are simultaneously driven.