The invention discloses a data query method and device and relates to the technical field of database application. The data query method and device can improve the data query efficiency during query of multi-list stored data. The method specifically comprises, according to a query request input by a user, obtaining a first type of data from data stored in single-list buffers, and then obtaining first data from the first type of data according to preset ordering rules, wherein the number of data contained in the first type of data is equal to that of storage lists, and every datum in the first type of data corresponds to one storage list; obtaining one datum from every storage list to compose the first type of data, and then obtaining one first datum from the first type of data. The data query method and device is mainly applied to the process of mass data query.