To provide a new carrying device capable of automatically, stably and efficiently carrying large containers for LP gas or the like at a low cost and capable of automatically continuing the carrying work even in the condition that a container is left at a carryout side.

A container (b) supplied from a carry-in side is supported by a right and a left roller conveyor parts 1, and a sliding base 10 is slid by the predetermined pitch in the condition of a corresponding container pushing member 15 engaged with the container (b), and a container pushing member at a following position is engaged with the container (b) so as to repeat the slide of the sliding base 10, and the container (b) to be supplied is sequentially and automatically carried to a carry-out side.