The invention relates to the technical field of steering columns and provides a damping component, a locking assembly, a supporting component, a steering column and a locking device of the steering column. The damping component comprises an adjusting piece, a torsion spring and a gear. A strut is arranged on the adjusting piece. The adjusting piece is used for being fixedly connected to an outer cam of the steering column to synchronously rotate along with the outer cam. The gear is used for being engaged with a circumferential toothed section fixedly arranged on the steering column. The gearis rotationally arranged on the strut. The strut is sleeved with the torsion spring. The torsion spring is located between the gear and the adjusting piece. One end of the torsion spring is connectedto the gear, and the other end of the torsion spring is connected to the adjusting piece so that damping releasing the rotating process can be supplied to an adjusting handle, the situation that a driving feeling is lowered due to the sudden change of force is avoided, and the adjusting process is more smooth.