Abstract: To understand the influence factors of the fire behavior, we studied the fire behavior in Miaofeng Mountain based on the experimental fires. The results showed that: The significant influence of speed of propagation, fire line intensity and flame length was the wind speed and slope(P < 0.05). However, the influence of the fuel depth and the percentage of needles to speed of propagation, flame length and fire line intensity was relatively small, which did not reach a significant level (P >0.05), and the most significant influence was the wind speed in the four influence factors, When the wind speed is 4 m/s, the maximum spread rate, flame length and fire line intensity can reach 2.357 m/min, 67.329 cm and 119.622 kW/m.

Key words: fire behaviors, speed of propagation, flame length, fire line intensity, Miaofeng Mountain