A storage container and a clothes treating machine including the same are described. The storage container is received in a detergent supply device and includes a cover portion including a cover rear protruding portion that protrudes outward from one side thereof. The storage container includes a detergent receiving portion including a container rear protruding portion that protrudes outward from one side thereof and that is aligned with the cover rear protruding portion. A user may grip the cover rear protruding portion provided in the cover portion to easily separate the cover portion and the detergent receiving portion. In addition, the user may grip the cover rear protruding portion and the container rear protruding portion to more easily separate the cover portion and the detergent receiving portion.