A first shield connector (2) includes a first connector housing (11), mounted directly on a mounting portion (13), and a first metal terminal (12) which is inserted into a metal terminal receiving chamber (15) in the first connector housing from a connecting side thereof, and is fixed in the chamber. A second shield connector (4) includes a second connector housing (31), abutted against the first connector housing, a second metal terminal (32), which is inserted into a metal terminal receiving chamber (34) in the second connector housing from that side thereof remote from a connecting side thereof, and is electrically connected to the first metal terminal, and a rear holder (33) which is inserted into the second connector housing from that side thereof remote from the connecting side thereof so as to prevent rearward withdrawal of the second metal terminal, and covers an outer surface of the second connector housing, and is retained on an outer surface of the first connector housing.