The invention relates to a connector component, a connector and a connector shell component. After the connector is matched with an adaptive connector in an inserting way, a locking block on an elastic claw of a locking piece is in stop fit with an anti-falling stop surface on the adaptive connector shell, so that the connector is prevented from being separated from the adaptive connector, the locking piece is positioned at the locking position, and the locking part on the locking piece is in stop fit with the elastic claw, so that the elastic claw is prevented from being deformed, the lockingblock on the elastic claw is prevented from being separated from the stop fit with the anti-falling stop surface, and the problem of poor reliability of the connector caused by easy stress deformation of the elastic claw of the conventional connector is solved; when the unlocking structure is used for unlocking, the locking piece is moved to the unlocking position, the connector is pulled backwards at the moment, the elastic claw is outwards deformed under the driving of the unlocking structure, the locking block on the elastic claw is separated from the stopping fit with the anti-falling stopping structure, and the unlocking is completed.