Cryogenic switchgear plays a vital role in cryogenic power systems, to make the system more reliable, robust and flexible. Different from semiconductor devices, cryogenic switchgear has a negligible on-state loss and higher breakdown strength. The interruption media for cryogenic switchgear can be cryogenic gas, cryogenic liquid or vacuum. Their interruption performances are being studied, novel structures and actuation mechanisms for cryogenic switchgear are also considered.