Refrigerant leakage detection method and device

The invention discloses a refrigerant leakage detection method and device. The refrigerant leakage detection method comprises the steps that the initial resistance value of a preset resistor in a semiconductor sensor is acquired, and the resistance value of the preset resistor represents the concentration of a refrigerant in the environment; when the difference between the current resistance value of the preset resistor and the initial resistance value is smaller than the preset degree, whether the refrigerant leaks or not is judged based on the absolute detection value of the semiconductor sensor; and when the difference between the current resistance value and the initial resistance value of the preset resistor exceeds a preset degree, whether the refrigerant leaks or not is judged based on the absolute detection value and the relative detection value of the semiconductor sensor. The reliability of refrigerant leakage detection can be improved. 本申请公开了一种制冷剂泄漏检测方法及装置。其中，该制冷剂泄漏检测方法包括：获取半导体传感器中的预设电阻的初始电阻值，预设电阻的