The invention provides a system and method for visually and automatically analyzing and assembling big data and belongs to the field of the big data. The system comprises: an automatic assembling subsystem, an intelligent analysis subsystem and an intelligent analysis and learning subsystem; the intelligent analysis and learning subsystem is a foundation and the intelligent analysis subsystem depends on the intelligent analysis and learning subsystem; meanwhile, the automatic assembling subsystem depends on the intelligent analysis subsystem; the method specifically comprises: aiming at mass data of a certain event, firstly, carrying out whole modeling through the intelligent analysis and learning subsystem; obtaining analysis result data through expert experience or machine learning; carrying out automatic data processing and analysis operation through the intelligent analysis subsystem to obtain analyzed data; carrying out automatic visualization through the automatic assembling subsystem. The system and the method, provided by the invention, have the advantages that the mass data can be visually presented through an assembling process without the participation of people; exploding increasing requirement of data quantity in a big data era is adapted and real-time updating is carried out on data information.