The invention provides a three-dimensional power-grid weather-information panoramic display method based on a GIS and a system thereof. The method is characterized in that weather, geography and power grid information is collected and the information is analyzed and processed into preset format data; each data is stored; and matching is performed on the weather, geography and power grid information and then a panoramic display module is used to carry out panoramic display. In the method, weather, geography and power grid information data is acquired in real time and earnest matching is performed. Panoramic display of power-grid weather data is performed in real time for a user and a correlation department. In the prior art, a power-grid weather information system can not carry out real-time processing and analysis on the weather data, accurate weather forecast can not be realized, accurate positioning calculating can not be performed on a weather disaster area and the panoramic display can not be ahieved. By using the method and the system in the invention, the above problems are solved.