Kerosene Burner has widely used in domestic heating appliance. Higher combustion efficiency is required to save fuel and clean exhaust gas. The combustion characteristics in kerosene burner highly depends on the performance of evaporating liquid kerosene. And performance of evaporating effect on generation of tar. In this study, flow and heat transfer of kerosene burner is simulated by FLUENT/UNS using unstructured mesh system and discrete phase model to analyze performance of evaporating kerosene liquid. The simulated results show very complicated flow pattern and back flow at the exit of burner.