A lever-type connector (1) includes a housing (10) and a lever (40) rotatably mounted on the housing (10) and includes two arm plates (41) coupled by an operating portion (42). The connector (1) is connectable to a mating connector by rotating the lever (40). Two support shafts (21) project from outer side surfaces (12) of the housing (10). The arm plates (41) include shaft holes (43) and start opening deformation while riding on the support shafts (21). The arm plates (41) return when the support shafts (21) fit into the shaft holes (43). Each arm plate (41) includes an inclined receiving surface (45) inclined toward the operating portion (42). An inclined surface (21A) is provided on a projecting end of the support shaft (21) and is configured to come into surface contact with the inclined receiving surface (45) at a ride initial position of the arm plates (41).