High-resolution temperature measuring device and multi-channel temperature measuring system

One or more embodiments of the invention provide a high-resolution temperature measurement device and a multi-channel temperature measurement system. The high-resolution temperature measurement device comprises a temperature measurement bridge, a signal amplification circuit, a signal conversion circuit and a signal processing unit, wherein two bridge arms of the temperature measurement bridge are at least two temperature measurement resistors which are connected in series; an excitation signal of the temperature measurement bridge is an alternating current signal; the signal output end of the temperature measurement bridge is connected with the signal input end of the signal amplification circuit, and the differential signal output end of the signal amplification circuit is connected with the differential signal input end of the signal conversion circuit; a temperature measurement signal output by the temperature measurement bridge is amplified through the signal conversion circuit, the amplified temperature