The invention discloses a system for evaluating individual performance and capability of a public servant based on big data, which comprises an infrastructure layer, a network layer, a data storage layer, a business layer, a system platform layer and an application layer. Through carrying out flow data acquisition, cleaning, conversion and loading on each business system in the government, the data are inputted to a unified big data analysis platform, the individual capability and individual risk items are analyzed through a forward behavior analysis algorithm and a reverse behavior analysis algorithm preset in the data analysis platform for the public servant, unified performance and capability evaluation is realized, the whole set of system is reasonably designed, the processing efficiency is high, the real-time performance is strong, and the report reliability is high.