By using the TVS-2000ST thermal video system,the thermal field structure va
riations of the diffusion flames were observed and measured before and afte
r interaction with the water mist, and the interactions of the water mist w
ith the flame of kerosene, ethanol and heptane were studied in the experime
nts, respectively, providing a simple and reliable experiment method for co
gnizance of the interaction mechanism of the water mist with the flame.