The invention discloses a blockchain big data business information analysis system. The system comprises a business information data platform, a web crawler system, a blockchain storage system, a cloud computing center and a user display side, the business information data platform and the web crawler system are subjected to information interaction, the blockchain storage system stores interaction information, the cloud computing center calls data from the blockchain storage system and processes the data, and a user transmits data processed in the cloud computing center to the user display side by operating the user display side; the business information analysis platform provides first-hand, special, detailed, accurate and personalized business information for the user in the first time. The system can be used in the fields of precision marketing, investment risk control, industrial economy development situation prediction, stock market prediction, enterprise credit evaluation, science and technology project application, market opportunity finding, automatic public opinion monitoring and the like.