A component supply system of the present disclosure includes a component supply unit automatically transfers a first carrier tape which stores components and is covered with a cover tape, exposes the components from the first carrier tape using a component exposing unit, and supplies the components which are exposed from the first carrier tape, a joining determination unit which determines whether or not a joining which joins a second carrier tape positioned behind the first carrier tape to the first carrier tape is present, and a controller which controls transferring of the first carrier tape by the component supply unit. The controller restricts the transferring of the first carrier tape in a case in which the joining determination unit determines that the joining is present.