Fecha de publicación: 09/10/2020 Fuente: Wipo "BigData" The invention relates to the technical field of big data processing, in particular to a big data quick retrieval system and method. The method comprises the following steps: acquiring first verification information through a user terminal after acquiring authorization of the user terminal; secondly, retrieving according to the first information retrieval request; establishing a user portrait corresponding to the first verification information based on the retrieved first target information, and acquiring second verification information through the user terminal when a second information retrieval request is acquired, judging the consistency of the second verification information and the first verification information, and finally determining whether to perform information retrieval based on the user portrait according to a consistency judgment result of the second verification information and the first verification information. According to the invention, the authentication informationof the user terminal is acquired by acquiring the authorization of the user terminal in advance, so that the identity authentication of the user of the user terminal is realized, the interaction timeconsumption of the authentication information between the user terminal and the information server is effectively reduced, and the information retrieval efficiency is improved.