Aviation kerosene uses jet fuel No.3 (JET A⁃1), which is a common source of danger in leaking fires.Based on theoretical analysis and PHAST software simulation, the influence of a tank leak in the aviation coal tank area on the surrounding storage tank was studied. The method for determining the safety distance between the tanks was introduced. The results show that the thermal radiation intensity increases with the increase of wind speed, and the thermal radiation value at the maximum wind speed increases by 65.7% compared with the average wind speed. As the distance increases, the radiation value becomes smaller, and as the height of the tank increases, the heat radiation value becomes larger, and the atmospheric humidity has less influence on the heat radiation. It is determined that the safety distance of the oil tank of the project is 17 m. The theoretical calculation is carried out by using MATLAB software and compared with the numerical simulation results. The maximum error is 18.7%, which has strong reliability. The research results have important theoretical and practical significance for tank tank design and guiding emergency disaster relief.