Abstract: The present disclosure discloses a flexible sliding power supply assembly, and a massage cushion and a control method therefor. A flexible conductive rail is provided with two or more fixing slots; conductive bars are mounted in the fixing slots in an embedded manner; a sliding conductive assembly is mounted on the flexible conductive rail; the sliding conductive assembly is in slidably electric connection with the conductive bars; and the conductive bars are correspondingly electrically connected to a power supply and a controller. The flexible conductive rail of the present disclosure can bend in a large arc in one direction to adapt to massage chairs with different shapes, so that the adaptability is good, and it can be used for both a common cushion and a curved cushion. In the flexible conductive rail, the tunnel type sliding conductive assembly can be made to be a standard component, so that it adapts to various kinds of cushions, the development cost is reduced, and assembling is facilitated.