The invention belongs to the technical field of rotor shaft journal end face sealing and locking design, and particularly relates to a rotor shaft end journal sealing and locking structure. The rotorshaft journal end sealing and locking structure comprises a sealing cover, multiple locking rods and clamping rings. The sealing cover is used for being arranged at the end of a rotor shaft journal inorder to seal a shaft journal inner cavity of the rotor shaft journal. An annular clamping groove is formed in the inner wall of the end of the rotor shaft journal, and multiple first notches distributed in the circumferential direction are formed in the end face of the annular groove. Each locking rod is used for being correspondingly clamped into one first notch, and one end of each locking rodis connected with the sealing cover. The clamping rings are used for being clamped into the annular clamping groove in order to press all the locking rods.