The invention provides a temperature chain sensor based on negative temperature coefficient thermistors; the temperature chain sensor comprises wires, filling material, a plurality of negative temperature coefficient thermistors and a hollow tube carrier; the plurality of negative temperature coefficient thermistors are fixed on the hollow tube carrier at certain intervals in sequence, thus forming the core member of the temperature chain sensor, wherein the hollow tube carrier is made of polycarbonate material; each fixed negative temperature coefficient thermistor is respectively connected to the outer side of the hollow tube carrier through the wire, and connected with an outer circuit in a half-bridge form, thus measuring the temperature of a measured object; a silica gel adhesive is filled in the internal gap of the hollow tube carrier. The temperature chain sensor is mainly applied to cold conditions in sea ice, polar areas, high plateaus and low temperature laboratories, and can measure the temperature gradient distribution in the ice body; the temperature chain sensor can provide very substantial resistance changes, and a disengaging signal amplifier is not needed; the temperature chain sensor is low in cost, and can be applied in large scale.