In the power system distribution network,automation technology is currently used in large quantities,which effectively enhances the stability of the power network,but faults will still occur.Therefore,the main study of power system distribution automation faults,summarize the structure of the distribution network,analyze and summarize the reasons for the faults of the distribution automation system,and study the handling of the faults of the distribution automation system,and put forward the preventive measures of the system faults,in order to help the maintenance personnel to strengthen the handling of the system faults,and to enhance the stability of the distribution automation system.