Abstract: Accident potential investigation is one of the important methods for accident prevention. To establishing standard of accident potential investigation in service performance sites for coal mining equipment, both of the service performance activities of coal mining equipment, instruments and equipment used in activities were analyzed respectively to get the systemic-overall safety risks and the information of hazard on the basis of JHA and FMEA, and the information database of safety risks, hazard and control methods is formed combining with the existing control methods in enterprises, mature experience, related standards, laws and regulations. Based on the information database, standards of accident potential investigation of service performance activities and tools used in the activity were established severally.