Electric thermo-couple temperature collection system and method

A thermocouple temperature collection method comprises the following steps: an analog-digital conversion device in a temperature collector calculates a correction coefficient of an analog-digital conversion channel; the analog-digital conversion channel collects an analog voltage signal produced by measuring an object to be measured by a thermocouple and converts the analog voltage signal into a voltage value of a digital signal; the analog-digital conversion device makes use of error correction for the voltage value based on the correction coefficient of the analog-digital conversion channel; the temperature collector transmits the corrected voltage value to a computer by virtue of a network interface; the computer carries out cold junction compensation for the corrected voltage value; and the compensated voltage value is converted into a real temperature value of the object to be measured. The thermocouple temperature collection method can carry out a remote monitoring of the temperature of the object to be measured, and can correct and compensate the temperature, which improves the measurement accuracy of the thermocouple.