A lever-fit connector, wherein a rotation prevention lock (12) preventing a lever (5) from being rotated when male and female connector housing are fitted (joined) to each other is installed in the inner wall (6A) of a lever insert hole (6) in a female housing (2). A rotation lock recessed part (58) in which the rotation lock part (12D) of the rotation prevention lock (12) is engageably stored is formed in the peripheral surface of the lever (5). The angle of the rotation lock part (12D) is set so that the rotation lock part (12D) is drawn to the lever (5) side in excessive rotation by bringing the rotation lock part (12D) into contact with the side wall surface (58B) of the rotation lock recessed part (58).
