A cotton candy preparing device is desired which does not operate with a pan portion removed. To provide a cotton candy preparing device that prevents a user from taking some time before getting aware that the device is not operating properly, there is provided a cotton candy preparing device having a pan portion that is fixed on to a main body portion by a locking piece, wherein a power supply switch is incorporated in the main body portion, wherein the power supply switch has a switch operating rod that enables on and off operations of a circuit, and a locking body that restricts a sliding movement of the switch operating rod, and wherein when the pan portion is fixed to the main body portion by the locking piece, the locking body is moved by the locking piece to thereby enable the switch operating rod to slide.
