This article is an eco bag characterized by two-sidedness, in which the bag storage bag part is integrated with the design of the bag body, and different shapes of rabbits appear during storage and use. The bag storage bag part has a drawstring structure and is opened and closed by opening and closing the mouth strap. When the bag mouth is opened and the bag storage bag part is flipped from a rabbit-like shape with a half-oval ear, the bag unfolds and changes to an eco-bag that looks like the face of a large rabbit. At this time, the bag storage bag portion on the back has a half-oval shape reminiscent of a tail. When stored, it is the reverse of use. It can be easily stored by simply inverting the half-oval shape, pushing the bag into it and pulling the mouth strap. There is no need to fold it carefully, reducing the hassle of storage. The right side view in the unfolded state is symmetrical to the left side view, and the right side view is omitted.