A lever type connector comprising: a connector body comprising: a pair of side walls (12a, 12b); and boss portions protruding from outer surfaces of the pair of side walls (12a, 12b), respectively; and a lever having a substantially U-shape and rotatably attachable to the connector body, the lever comprising: a pair of arm portions (22a, 22b) having boss fitting holes into which the boss portions are inserted, respectively; and a coupling portion that couples one ends of the pair of arm portions (22a, 22b), wherein a fitting force and a detachment force of the connector body relative to a counterpart connector is applied by rotation operation of the lever, wherein an electric wire cover is attached to the connector body, the electric wire cover being configured to cover one or more electric wires drawn out from the connector body, wherein the electric wire cover comprises an electric wire lead-out portion having a tubular shape, the electric wire lead-out portion through which the one or more electric wires are allowed to be drawn out together, characterized in that the coupling portion comprises a recessed sliding portion recessed in an arc shape, and wherein in attaching the lever to the connector body, the lever is positioned relative to the connector body by bringing the recessed sliding portion in contact with a part of an outer peripheral portion of the electric wire lead-out portion of the electric wire cover so as to allow positions of the boss fitting holes to be aligned with positions of the boss portions, and the lever is rotatably attached to the connector body in a state where the boss portions are inserted into the boss fitting holes. a pair of side walls (12a, 12b); and boss portions protruding from outer surfaces of the pair of side walls (12a, 12b), respectively; and a lever having a substantially U-shape and rotatably attachable to the connector body, the lever comprising: a pair of arm portions (22a, 22b) having boss fitting holes into which the boss portions are inserted, respectively; and a coupling portion that couples one ends of the pair of arm portions (22a, 22b), wherein a fitting force and a detachment force of the connector body relative to a counterpart connector is applied by rotation operation of the lever, wherein an electric wire cover is attached to the connector body, the electric wire cover being configured to cover one or more electric wires drawn out from the connector body, wherein the electric wire cover comprises an electric wire lead-out portion having a tubular shape, the electric wire lead-out portion through which the one or more electric wires are allowed to be drawn out together, characterized in that the coupling portion comprises a recessed sliding portion recessed in an arc shape, and wherein in attaching the lever to the connector body, the lever is positioned relative to the connector body by bringing the recessed sliding portion in contact with a part of an outer peripheral portion of the electric wire lead-out portion of the electric wire cover so as to allow positions of the boss fitting holes to be aligned with positions of the boss portions, and the lever is rotatably attached to the connector body in a state where the boss portions are inserted into the boss fitting holes. a pair of arm portions (22a, 22b) having boss fitting holes into which the boss portions are inserted, respectively; and a coupling portion that couples one ends of the pair of arm portions (22a, 22b), wherein a fitting force and a detachment force of the connector body relative to a counterpart connector is applied by rotation operation of the lever, wherein an electric wire cover is attached to the connector body, the electric wire cover being configured to cover one or more electric wires drawn out from the connector body, wherein the electric wire cover comprises an electric wire lead-out portion having a tubular shape, the electric wire lead-out portion through which the one or more electric wires are allowed to be drawn out together, characterized in that the coupling portion comprises a recessed sliding portion recessed in an arc shape, and wherein in attaching the lever to the connector body, the lever is positioned relative to the connector body by bringing the recessed sliding portion in contact with a part of an outer peripheral portion of the electric wire lead-out portion of the electric wire cover so as to allow positions of the boss fitting holes to be aligned with positions of the boss portions, and the lever is rotatably attached to the connector body in a state where the boss portions are inserted into the boss fitting holes.