The invention provides a big data technology-based electric power fee controlling method and system so as to solve problems of low storage capability, low calculation performance and poor system stability of a conventional electric power fee controlling system in big data quantity conditions. The big data technology-based electric power fee controlling method and system specifically comprises the following steps: 1, a big quantity of data is written in, searched and updated via distributed storage technologies; 2, a distributed internal storage calculation engine is used for data storage, verification and calculation in a whole fee calculation process; 3, a distributed file system, clustering resource scheduling and big data clusters are used as a basic framework, and physical nodes of the system can be dynamically expanded and removed. The big data technology-based electric power fee controlling method and system can provide mass data storage capability and high performance data calculating and analyzing capability, horizontal expansion capability of the fee controlling system can be increased, hardware cost can be lowered, fault tolerating capability of the system can be improved, fee control calculation stability can be improved, and application of big data technologies to electric power fee control can be forcefully supported.