The invention discloses an efficient fault diagnosis engine. The efficient fault diagnosis engine includes a comprehensive information inquiry unit, a fault diagnosis test unit, a fault preprocessing unit, a statistical analysis unit, a configuration management unit, a system management unit and a system interface unit; the comprehensive information query unit includes a user information query module, a user authentication information query module, a user association network equipment query module, a user terminal equipment query module, a speed measurement quality query module and a line quality inquiry module; and the fault diagnosis test unit comprises a broadband common fault diagnosis module, a broadband segmentation diagnostic test module, an end-to-end fault test module and a one-key repair module. The engine includes a plurality of functional units; the comprehensive query, management and diagnosis modules are provided, and a process design module is adopted, and therefore, network diagnosis process configuration can be carried out according to the needs of users, and diagnosis can be carried out in a targeted manner, and the users can be assisted to find the positions and causes of network faults more quickly.