To provide a connector cover to be attached to a wire harness easily and firmly with electric wire terminals in the wire harness being connected to connectors.

A connector cover, which is cylindrical-shaped and provided with openings at the both ends, for covering a wire harness with electric wire terminals connected to connectors, the electric wire terminals constituting the wire harness, includes: a large-diameter cylindrical-shaped connector housing; and a wire housing, being continuous with the connector housing, with the diameter of one end shortened. At least the wire housing is formed of rubber and the rubber-made wire housing is stretched and folded back to the connector housing. After the connectors are accommodated in the connector housing with the rubber-made wire housing folded back, the wire housing is pulled back to accommodate wires connected to the connector therein.