Aiming at the problems in fault diagnosis and processing of power system,the fault information sources and factors in quick integration are discussed,and the requirements for the fault diagnosis and restoration of power network are derived. A quick information integration system based on Intranet technology is put forward for power network real-time operation,fast fault analysis and system restoration,which integrates the main protection and fault recorder information and the key data of online remote monitoring. The selection and integration of fault information are discussed and the network structure and communication mode are expounded. The net-structure of main and subsidiary stations is proposed,and the optimum communication method is selected. The management procedures of quick fault information integration and intelligent diagnosis and the system functions are given.