The invention relates to a power transmission and transformation project information management platform for an electric power system and a method thereof. The power transmission and transformation project information management platform is based on a power distribution geographical information system (GIS) and comprises the components of a project management unit, a circuit interval setting unit, a pole management unit, a section dividing management unit and a fault isolating unit. The project management unit is successively connected with the fault isolating unit, a form filling and submitting unit and a statistics unit in communication connection. The circuit interval setting unit, the pole management unit and the section dividing management unit are successively connected with the project management unit. The project management unit utilizes a recloser for switching on and switching off corresponding items, repeating operation sequence, resetting and closing, thereby identifying a fault position. The power transmission and transformation project information management platform and the method thereof have beneficial effects of refined power transmission and transformation project information and multidirectional management.