The invention belongs to the power distribution network management application field, especially relates to an electric power marketing management information system used for a power supply company based on cloud computing. The electric power marketing management information system comprises a cloud service layer used for data storage and data analysis, a service platform layer used for data conversion with the cloud service layer, and an expression layer used for information interaction between the system and clients. The electric power marketing management information system used for the power supply company based on the cloud computing is advantageous in that by adopting the cloud service layer, the service platform layer, and the expression layer, which are cooperated with each other, the marketing staff of the power supply company can know the electricity utilization information of the clients and related policies quickly, and therefore the service is provided for the clients effectively and accurately, the service quality of the power supply company is improved, power supply supply-demand conflicts are reduced, and indispensable assistance is provided for development of enterprises.