Abstract: Coal mine will generate a lot of dusts in the production process; dust problems affecting the progress of mining work, especially heading face velocity, directly affect the economic benefits. Self-rotating spray dust suppression is the simplest and the most effective and economic safety dust suppression technology for high outburst face. ANSYS software is used to carry out aerosol rotating two-phase flow field numerical simulation in underground environment, we analyze fog field distribution of different spray cone angles under different oblique angles; when the fog field distribution is the same, and the big oblique angle has large spray area of spray cone angle. When the spray cone angle is in a certain, the greater of the declination of spray coverage is, the shorter of the jet distance is. We compare the fog field condition between rotating and non-rotating; fog field cover area is bigger than that of not-rotating, two sets of nozzles are combined into one group, droplet density is bigger, and the jet distance is farther.