A differential signal transmission cable includes: an insulating electric wire having a pair of conductive wires and an insulating layer covering the pair of conductive wires; a shield tape wound around an outer periphery of the insulating electric wire; a first tape wound around an outer periphery of the shield tape and having a first resin covering layer; and a second tape wound around an outer periphery of the first tape and having a second covering layer. The second covering layer is made of a high softening point material having a softening point that is higher than a softening point of the first resin covering layer.