The invention relates to an evaluation method of flame model reliability, belonging to the technical field of virtual reality science. The invention has the technical scheme as follows: (1) under a relatively stable environment, sampling flame combustion to obtain a real flame video and a simulated flame three-dimensional time-varying model under the state, and capturing a plurality of images at equal time interval in a video and simulation result; (2) comparing the images obtained in step (1), calculating the form error, the color error and the random error of the flame model relatively to the real flame, and combining with user requirements to calculate the demand error of the flame model relatively to the real flame; (3) generating the error function of the flame model by each error item; and (4) according to the error function, analyzing the flame model reliability. In the invention, the visual parameter information of the flame model and parameter information relative to user demands are fully considered, so that a method for evaluating a flame simulation result is provided, the reliability of a simulation result is analysed and a method basis for choosing and improving a modelling method is provided.