The disclosure relates to a rotating component and a terminal device. The rotating component includes: a hinge bracket; a movable strip disposed on the hinge bracket, the movable strip including a first meshing portion facing toward the hinge bracket and a second meshing portion facing away from the hinge bracket. The rotating component further includes two rotating structures, where the first rotating structure is disposed on one side of the movable strip and meshed with the first meshing portion, and the second rotating structure is disposed on another side of the movable strip and meshed with the second meshing portion. When the movable strip moves, the two rotating structures rotate synchronously in opposite rotation directions.