Disclosed is a fire simulation method using particle fuel. The fire simulation method includes: preparing a grid and a fuel particle in an initial state; calculating speed of the fuel particle by using the speed of the grid; calculating advection of the fuel particle; tracking and finding a fuel surface; setting temperature at the fuel surface; calculating buoyancy generated by the combustion of the fuel particle; calculating a vortex effect generated by the combustion of the fuel particle; calculating the speed of the grid meeting a incompressible condition based on a calculated result value for the buoyancy and the vortex effect; and obtaining a result of temperature transition from the change in temperature field advection and temperature based on the speed of the grid meeting the incompressible condition.