Abstract: As a revolutionary technological breakthrough after cloud computing, internet of things, big data makes the information society enter into a new stage, which has brought fundamental changes to the information service industry and has exerted certain influence on library knowledge consultation. This paper expounds the basic connotation of big data, analyses the opportunities of library knowledge consultation in the era of big data, and puts forward the service strategy of knowledge consultation in libraries under the background of big data.

Key words: big data; library; knowledge consultation