Proposed is a blender including a container body in which food is accommodated, a main body provided underneath the container body and supporting the container body, a container lid detachably mounted on an upper surface of the container body and opening and closing the top of the container body, and a detection system detecting whether or not the container lid is mounted on the container body, wherein a seating support is formed on an upper surface of the main body in a manner that protrudes upward therefrom to be stepped, a bottom surface of the container body being seated on the seating support.