An ejection device (1, 101, 201) for a movable furniture part (2, 22), having at least one ejection element (3, 203) for ejecting the movable furniture part (2, 22) from a closed position into an open position, wherein the movable furniture part is configured as a folding door or as a folding and sliding door which comprises at least a first door panel and a second door panel, and the at least one ejection element (3, 203) is configured to eject the folding door or folding and sliding door out of a closed position, in which the at least two door panels (19, 20) are disposed in a common closed plane, into an open position, in which the at least two door panels (19, 20) enclose an angle with respect to each other which is not equal to 180□□□wherein the ejection device (1, 101, 201) has at least one fitting component (40, 240) for mounting the ejection device (1, 101, 201) on the first door panel and the at least one ejection element (3, 203) bears on the at least one fitting component (40, 240), and the at least one ejection element (3, 203) has at least one device (23, 24, 223, 224) for coupling the at least one ejection element (3, 203) to the second door panel at least during the course of folding the folding door or folding and sliding door out of the closed position into the open position, at least one ejection energy accumulator (4, 204) for applying force to the at least one ejection element (3, 203) when ejecting the movable furniture part (2, 22) out of the closed position into the open position, at least one locking device (5, 205) for locking the at least one ejection element (3, 203) against the force applied by the at least one ejection energy accumulator (4, 204), wherein the at least one locking device (5, 205) has at least one unlocking device (10, 110, 210) which comprises at least one first coupling device (11, 211) for coupling the at least one unlocking device (10, 110, 210) to at least one switch element (7, 207), wherein the at least one locking device (5, 205) can be unlocked by pushing the movable furniture part (2, 22) further into a further pushed position which is behind the closed position in the closing direction, characterized in that the at least one switch element (7, 207) is operatively connected to the at least one locking device (5, 205) and has at least one activation position, in which the at least one locking device (5, 205) can be unlocked, and at least one deactivation position, in which the at least one locking device (5, 205) cannot be unlocked, wherein, during the course of ejection of the movable furniture part (2, 22) out of the closed position into the open position and/or by unlocking the at least one locking device (5, 205), the at least one switch element (7, 207) can be moved into the at least one deactivation position, wherein the at least one first coupling device (11, 211) of the at least one unlocking device (10, 110, 210) has at least one contact position (12, 212), wherein in the at least one activation position, the at least one first coupling device (11, 211) is in contact with the at least one switch element (7, 207) via the at least one contact position (12, 212) and in the at least one deactivation position is free from contact with the at least one switch element (7, 207) at least in the at least one contact position (12, 212), wherein a further coupling device (8, 9, 208, 209) is provided by means of which the at least one switch element (7, 207) can be directly or indirectly coupled to the at least one ejection element (3, 203), and wherein at least one restoring device (13, 14, 213, 214, 215) is provided by means of which the at least one switch element (7, 207) can be moved out of the at least one deactivation position into the at least one activation position following the ejection of the movable furniture part (2, 22) out of the closed position into the open position or rather unlocking of the at least one locking device (5, 205).