Electronic thermometer

The utility model discloses an electronic thermometer, which relates to the field of temperature measurement and comprises a probe assembly, the probe assembly comprises a probe and a temperature sensor, the temperature sensor is arranged in the probe, and the probe is made of chemical inert materials. The signal processing assembly comprises a shell and a signal processing board arranged in the shell, the signal processing board comprises a filtering module and an analog-to-digital conversion module, the filtering module is used for filtering signals collected by the temperature sensor, and the analog-to-digital conversion module is used for converting the filtered signals into digital signals; and the connecting piece is used for connecting the probe assembly and the signal processing assembly. The probe made of a chemical inert material is adopted, so that chemical reaction with a detected substance is avoided; the built-in signal processing board converts a temperature analog signal into a digital signal