It is aimed to enhance the separation operability of male and female connectors. A female connector housing (8) is provided with a lever accommodating portion (8B), and a lever (6) is rotatably mounted on an outer surface (18) of a main body portion (8A) inside. The lever (6) is provided with a lock arm (24). An operating portion (24B) is provided on a tip part of the lock arm (24) and covered by a protecting portion (28). In the case of separating male and female connectors (M, F), the locking of a lock protrusion (25) and a locking projecting edge (26) is released by pinching a first pinching surface (27) formed on the operating portion (24B) of the Jock arm (24) and a second pinching surface (29) of the protecting portion (28). Since the first pinching surface (27) and the second pinching surface (29) are arranged along a deflecting direction of the lock arm (24), a pinching operation is facilitated.
