To provide a surely fixed state with a simple work.

An earth joint connector 31 has a resin-made housing 3, a terminal part 7 provided within the housing 3 and conductively continued to a partner terminal in the fitting with a partner housing 21, and a metal plate-like earth fixing piece 9 conductively continued to the terminal part 7, extended to the outside of the housing 3 and having a bolt fastening part 11. The housing part 3 of this earth joint connector 31 in which the earth fixing piece 9 is conductively connected to the metal mounting part 15 in the state where the bolt fastening part 11 of the earth fixing piece 9 is fastened and fixed by a bolt 19 screwed to the bolt hole 17 of the mounting part 15 has a jig insert hole 35 for guiding the fastening jig 37 of the bolt 19 so that the bolt 19 is inserted in a normal direction to the bolt hole 17 in the state before bolt fastening where the housing 3 is placed on the mounting part 15 and the bolt fastening part 11 of the earth fixing piece 9 is fitted to the bolt hole 17 of the mounting part 15.