The invention discloses a friction plate set for a steering pipe column, a steering pipe column adjusting mechanism and a vehicle. The friction plate set comprises a first friction plate and a second friction plate, wherein the first friction plate is used for being fixed to a clamping support for clamping the pipe column, and the second friction plate is used for being connected to a connecting shaft penetrating through the clamping support in a sleeving mode. The first friction plate is in a long shape, and a sliding groove hole allowing the connecting shaft to penetrate is formed in the first friction plate in the length direction. A mounting hole matched with a shaft hole of the connecting shaft is formed in the second friction plate, and the second friction plate is provided with an outer outline not protruding out of the first friction plate. Because not needing to be connected with the other base bodies, the second friction plate can be designed to be small, and in this way, under the condition that the contact area of the second friction plate and the first friction plate is unchanged, the area of the second friction plate is decreased, so that the weight of the friction plate set is decreased, accordingly, the weight of the pipe column can be decreased, and meanwhile holding power can be provided during locking of the pipe column.