A boarding and exiting handrail including: a base part provided near an entrance-and-exit of a vehicle so as to be rotatable with an axis oriented in an up-down direction; a handrail main part capable of being gripped by passengers boarding and exiting through the entrance-and-exit; and a rail part slidably holding a sliding member mounted on a sliding door that opens and closes the entrance-and-exit by moving along an outer wall surface of the vehicle. When the sliding door opens the entrance-and-exit, the boarding and exiting handrail assumes a deployed posture with the handrail main part and the rail part protruded toward the outside of the vehicle as seen from above, and when the sliding door closes the entrance-and-exit, the boarding and exiting handrail assumes a retracted posture with the handrail main part and the rail part disposed along the sliding door as seen from above.