A component supplying device includes a body portion including a component pick-up position, a tape path, first and second transfer portions, a control portion, and an input portion. The control portion includes a discharge processing portion which executes a discharge process in response to an instruction at the input, and a transfer processing portion which executes a transfer process after the discharge process. In the discharge process, a first component supply tape is transferred by the first transfer portion away from the first transfer position so that at least a part of the first component supply tape is discharged outside the body portion while holding the components. In the transfer process, a second component supply tape that is at the second transfer position is transferred by the second transfer portion toward the first transfer position, and transferred by the first transfer portion toward the component pick-up position.