Abstract: The system of underground mine fire is very complicated. The CA fire spread modeling method based on regular network cannot accurately describe the underground mine fire system. Based on the small world effect of the complex network theory, this study is to establish underground mine fire dynamic spread model. This model can describe the fire spread process caused by flame heat conduction, heat convection and heat radiation and the long distance fire spread caused by the fire spreading effect and the fire source effect the spread of fire. The present model can then be considered as the base of an operational tool for firefighting management as well as a training tool for firefighters.