The utility model relates to a cable for measuring the temperature of mass concrete, which comprises a constantan wire. The utility model is characterized in that at least one set of conducting wire is arranged inside the cable; each set of conducting wire consists of a plurality of copper wires and a constantan wire; the copper wires are welded with a section of constantan-wire leading-out wire which is welded with the constantan wire at different positions to form a temperature test terminal; and the constantan wire and the copper wires are respectively coated with an insulating layer. By the method that a plurality of test terminals of the cable share the same constantan wire, the cable for measuring the temperature of mass concrete reduces the core number of the cable, lowers the consumption of the constantan wire and lowers the use cost.