Guiding device, shock absorber and vehicle

The utility model discloses a guiding device, a shock absorber and a vehicle. The guide device comprises a guide seat, a supporting ring and a sealing ring; a shaft hole is formed in the middle of the guide seat, a first oil passing hole is formed in the side wall of the guide seat, and the inlet end of the first oil passing hole communicates with the shaft hole. The guide seat is sleeved with the supporting ring, the supporting ring and the guide seat are tightly connected to form a sealing groove, and the outlet end of the first oil passing hole communicates with the groove bottom of the sealing groove; the sealing ring is arranged in the sealing groove and abuts against the groove bottom, and the sealing ring can elastically deform so as to seal the outlet end in the state that the external pressure of the guide base is larger than or equal to the internal pressure and open the outlet end in the state that the external pressure of the guide base is smaller than the internal pressure. The sealing ring has t