Abstract: The present disclosure is concerned with combinational dump containers which consist of a major dump container and at least a minor garbage collector which is structured in a close form with flap covers openably controlled by foot-actuated devices, and an automatic garbage discharge outlet disposed at the bottom of the minor garbage collector, which can work in cooperation with an opening unit of the major dump container as well as an anti-dust cover thereof, therefore the minor garbage collector, lifted up by a hoist unit, can dump all the garbage therein into the major dump container carried by a truck when the automatic garbage discharge outlet is actuated by the opening unit.