In smart grid, more data will be collected at finer granularity. It will promote the development of power system control and innovation technology. With the advantages of cloud computing technology are becoming increasingly prominent, it is gradually entering into power industry research. This paper focuses on cloud-based data processing and analysis techniques of user side in smart grid. To prove that the integration of cloud computing, smart grid, data analysis technique is practical, we introduced the cloud platform architecture designed for data processing and its key technologies first. Then, main sections of cloud-based data processing, including data collection, storage, analysis and visualization are discussed. Especially, based on smart grid scenes, data analysis methods in data analysis section are described in detail.