The utility model provides a differential signal cable which can be used in the high speed transmission which is above 10Gbps. The differential signal cable can not rapidly increase the attenuation because of the frequency characteristic of the differential signal cable and can bear the bending and can be produced stably. The differential signal cable includes a pair of insulated wires (2) which are arranged in parallel, and a shielding layer (4) which coats the pair of the insulated wires (2) and is formed by spirally winding a belt (3) provided with the metal foil. For the shielding layer (4), the side which is provided with the metal foil (3b) is taken as the outside of the belt (3) which is provided with the metal foil, and the belt is bent along the lengthwise direction, and at least a part of a bending part (5) formed by the bending process is wound on the pair of the insulated wires (2) in a spiral overlapping manner.