An end effector of the industrial robot has an end effector base portion connected to a robot arm, a first object holding mechanism provided to the end effector base portion so as to hold a first type of object to be handled, a second object holding unit for holding a second type of object to be handled, and a unit holding mechanism provided to the end effector base portion so as to releasably hold the second object holding unit. The second object holding unit which is held by the unit holding mechanism is driven by the first object holding mechanism. The end effector is capable of considerably enlarging a range of kind and size of an object which can be handled while suppressing increase of manufacturing cost and decline in credibility and increase in changing hand installation space accompanying complication of the configuration.