A structure for attaching a coaxial connector to a connector housing, in which an outer conductor terminal of a first coaxial connector is connected to a top end of a coaxial cable, an outer conductor terminal of a second coaxial connector is connected to a top end of a coaxial cable, and the outer conductor terminals are mated in a connector housing,
- wherein an opening portion provided on an outer surface at a main section of the outer conductor terminal of the first coaxial connector and arranged to lock a locking piece of the connector housing is closed by a main section of the outer conductor terminal of the second coaxial connector.