Proposed is a blender in which when the closure of a container lid of a container body is detected, a main body operates. In the blender, when the closure of the container lid of the container body is detected, power is transmitted from a first induction coil of the main body to a second induction coil of the container body, and by using the power transmitted to the second induction coil, an electromagnet module of the container body transmits a signal to a receiving module of the main body, and when the receiving module receives the signal, the main body recognizes the closure of the container lid of the container body and operates.