The invention discloses a main and distribution network-integrated accident processing method and a main and distribution network-integrated accident processing system. An energy management system (EMS) acquires fault information, all power-off boundary device information is obtained according to the fault information, and all boundary device information is transmitted; a distribution management system (DMS) receives all boundary device information, all power-off user equipment information in the distribution network is obtained according to all boundary device information, and all power-off user equipment information is returned to the EMS; the EMS receives all power-off user equipment information, the all boundary device information and the all power-off user equipment information are displayed as display information, and thus, a worker can take corresponding accident processing measures according to the display information. Integration of the EMS and the DMS is realized, the accident processing timeliness and the working efficiency are improved, the workload of the worker is reduced, and human resources are saved.