To provide a compact toner carrying device, a toner supply device consisting of the toner carrying device and an image forming device consisting of the toner carrying device and the toner supply device by which toner is carried even to a spot where a high-quality image is formed by preventing damage caused by heating, toner flocculated lump or an abnormal image from occurring even when a distance that the toner is carried by sliding of a carrying housing and a carrying screw is long and the toner exists distant from a developing position in the case of using the carrying screw rotating in a carrying housing or the carrying screw rotating in the carrying housing and a powder pump in common.

This toner carrying device is constituted of the carrying housing 1 supplying or recovering the toner T from a position distant from the developing position, consisting of an elastic body and having the shape of a hollow tube; the carrying screw 2 included in the housing and carrying the toner T from the carrying-in port 1a side to the discharge port 1b side of the housing 1 by rotationally driving; and a carrying and rotational driving means 3 rotationally driving the screw 2.