The invention relates to the technical field of smart cities, and especially relates to a big data management and analysis platform system based on city management. The system comprises a big data management module, a big data analysis module and a big data result display module, wherein the big data management module comprises a big data access subsystem, a big data storage subsystem, a big dataresource management subsystem, a big data sharing exchange subsystem, a big data opening subsystem and a big data quality guarantee subsystem. The big data result display module comprises a big data visualization subsystem, a decision analysis subsystem, an intelligent analysis subsystem and a key index analysis subsystem. Data standards of all departments and enterprises in urban management are unified, standardized storage and real-time interaction are facilitated, decisions are obtained, early warning of future trends is carried out, automatic arrangement, analysis, display and early warning of big data are achieved, and the intelligent level of urban management is improved.