The invention provides a calibration method and
system for a temperature and
humidity sensor, and the method comprises the steps: obtaining a real-time temperature value of a calibration cavity and a real-time
humidity value of the calibration cavity within a preset maintenance time, and obtaining a temperature driving
signal and a
humidity driving
signal based on the real-time temperature value and the real-time humidity value, carrying out temperature and humidity adjustment on the calibration cavity based on the temperature and humidity adjustment result and obtaining real-time temperature and humidity values again until a preset temperature stable condition and a preset humidity stable condition are met, and collecting a first temperature and a first humidity of the
chip; calculating four correction coefficients based on the real-time humidity value, the first temperature of the
chip and the first humidity; and calculating a corrected humidity value based on the four correction coefficients, the
chip first temperature and the chip first humidity, calculating a humidity difference value based on the real-time humidity value, and if the humidity difference value is smaller than or equal to a preset humidity difference threshold value, completing calibration. According to the calibration method of the temperature and humidity sensors, low calibration efficiency and poor calibration batch consistency are avoided, and automatic parallel calibration of the plurality of temperature and humidity sensors is realized.