Joint structure, incubator sterilizing system and using method

The invention provides a connector structure, an incubator sterilization system and a use method, the connector structure comprises a connector which is telescopically connected with an interface, the connector is internally provided with a first via hole penetrating through the interface, the side wall of the first via hole is provided with an opening, and the opening can penetrate through the interface or be shielded by the side wall of the interface when the connector is in a telescopic state along the interface; the limiting head is connected with one end of the connector, a second through hole communicating with the first through hole is formed in the limiting head, and the limiting head is used for being externally connected with a pipeline; and the sealing cover is connected with the other end, far away from the limiting head, of the joint and is used for sealing the end part of the first via hole. The connector can stretch out and draw back in the connector, so that the opening in the connector penetr