Fine particulate matter purification system and method suitable for low-temperature environment

The invention discloses a fine particulate matter purification system and method suitable for a low-temperature environment. The purification system comprises a fine particulate matter detector, a processor, a gas-liquid two-phase flow cloud and mist nozzle, a water supply device and an air supply device, wherein an output end of the fine particulate matter detector is in electric signal connection with an input end of the processor and the fine particulate matter detector is used for collecting concentration information of the fine particulate matters in the environment, generating fine particulate matter concentration signals and sending the fine particulate matter concentration signals to the processor; a water outlet end of the water supply device and an air outlet end of the air supply device are respectively communicated with a water inlet and air inlet of the gas-liquid two-phase flow cloud and mist nozzle; and an output end of the processor is in electric signal connection withthe water supply device