The invention relates to a method for positioning accidence and relative device. Wherein, said method is characterized in that: first, setting alarm correlation data, according to the alarm analysis factor; then based on said alarm correlation data, processing correlation analysis on the alarm message, to find the source alarm; at least, positioning accidence, based on found source alarm. With said invention, the source alarm can be found from lots of alarm data quickly, to improve the alarm analysis speed and improve the accidence positioning accuracy. And the alarm analysis process is completed by software, to avoid mistake and miss most, therefore, the alarm analysis data is reliable, the accidence positioning is accurate and the labor density is reduced.