A temperature measurement circuit, comprising: a differential amplifier circuit (301; 52; 701), wherein a non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is unloaded, or connected to a thermistor (300; 50; 700) or a calibration resistor (305; 55; 705), and the thermistor (300; 50; 700) is configured to convert a temperature signal of a measured obj ect to a resistance signal; and a conversion circuit (308; 58; 708) connected to the differential amplifier circuit (301; 52; 701), wherein the differential amplifier circuit (301; 52; 701) is configured to: output an offset voltage when the non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is unloaded; output a calibration voltage when the non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is connected to a first terminal of the calibration resistor (305; 55; 705); and output a temperature measurement voltage of the measured object when the non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is connected to a first terminal of the thermistor (300; 50; 700); and wherein the conversion circuit (308; 58; 708) is configured to obtain the temperature signal of the measured object based on the offset voltage, the calibration voltage, and the temperature measurement voltage; wherein an inverting input terminal of the differential amplifier circuit (301; 52; 701) is connected to a first voltage; a second terminal of the thermistor (300; 50; 700) is supplied with a second voltage; a second terminal of the calibration resistor (305; 55; 705) is supplied with the second voltage; and the second voltage is greater than or smaller than the first voltage; and the differential amplifier circuit (301; 52; 701) further comprises a feedback resistor (306; 56; 706) and a differential amplifier (307; 57; 707), wherein the feedback resistor (306; 56; 706) is a non-sensitive resistor, and two terminals of the feedback resistor (306; 56; 706) are connected to a non-inverting input terminal and an inverting output terminal of the differential amplifier (307; 57; 707), respectively; wherein the second voltage is a ground voltage; the first voltage is a common mode voltage; and a resistance of the feedback resistor (306; 56; 706) is smaller than a resistance of the calibration resistor (305; 55; 705). a differential amplifier circuit (301; 52; 701), wherein a non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is unloaded, or connected to a thermistor (300; 50; 700) or a calibration resistor (305; 55; 705), and the thermistor (300; 50; 700) is configured to convert a temperature signal of a measured obj ect to a resistance signal; and a conversion circuit (308; 58; 708) connected to the differential amplifier circuit (301; 52; 701), wherein the differential amplifier circuit (301; 52; 701) is configured to: output an offset voltage when the non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is unloaded; output a calibration voltage when the non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is connected to a first terminal of the calibration resistor (305; 55; 705); and output a temperature measurement voltage of the measured object when the non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is connected to a first terminal of the thermistor (300; 50; 700); and output an offset voltage when the non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is unloaded; output a calibration voltage when the non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is connected to a first terminal of the calibration resistor (305; 55; 705); and output a temperature measurement voltage of the measured object when the non-inverting input terminal of the differential amplifier circuit (301; 52; 701) is connected to a first terminal of the thermistor (300; 50; 700); and wherein the conversion circuit (308; 58; 708) is configured to obtain the temperature signal of the measured object based on the offset voltage, the calibration voltage, and the temperature measurement voltage; wherein an inverting input terminal of the differential amplifier circuit (301; 52; 701) is connected to a first voltage; a second terminal of the thermistor (300; 50; 700) is supplied with a second voltage; a second terminal of the calibration resistor (305; 55; 705) is supplied with the second voltage; and the second voltage is greater than or smaller than the first voltage; and the differential amplifier circuit (301; 52; 701) further comprises a feedback resistor (306; 56; 706) and a differential amplifier (307; 57; 707), wherein the feedback resistor (306; 56; 706) is a non-sensitive resistor, and two terminals of the feedback resistor (306; 56; 706) are connected to a non-inverting input terminal and an inverting output terminal of the differential amplifier (307; 57; 707), respectively; wherein the second voltage is a ground voltage; the first voltage is a common mode voltage; and a resistance of the feedback resistor (306; 56; 706) is smaller than a resistance of the calibration resistor (305; 55; 705).