The invention discloses a cabin ultraviolet lamp sterilization system which comprises an in-vehicle panel and ultraviolet sterilization lamp beads, the ultraviolet sterilization lamp beads are at least partially installed on the inner side of the in-vehicle panel, the cabin ultraviolet lamp sterilization system further comprises a movement unit installed on the inner side of the in-vehicle panel, and the movement unit drives the ultraviolet sterilization lamp beads to move such that the ultraviolet sterilization lamp beads can be switched between a working state and a hidden state; in the working state, the ultraviolet sterilization lamp beads move to face the cabin; in the hidden state, the ultraviolet sterilization lamp beads move to the irradiation surfaces of the ultraviolet sterilization lamp beads to be hidden on the inner side of the in-vehicle panel; the system further comprises a fan, the fan is installed on the inner sides of the ultraviolet sterilization lamp beads, and an air outlet of the fan faces the in-vehicle panel. The invention further discloses a cabin ultraviolet lamp sterilization method and a vehicle. The system, the method and the vehicle have the advantages that the sterilization effect is improved, passengers are prevented from being scalded, the heat dissipation performance is good, and the system is more intelligent.