Road tunnel is a limited-access space, as the result, rescue works would require more techniques because of its difficulty, if a serious accident occurs in it. This article focuses on the tunnel fire and discusses the situation and the time limit of evacuation, moreover, the impact of fire that could happen in Snow Mountain Tunnel. People should have more basic understanding about the correct emergency behavior they might face when driving through a long tunnel, and enhance self-rescue ability by education and dissemination to decrease losses in life.