The embodiment of the invention discloses a system, a method and a device for processing information. A specific embodiment of the system comprises a first terminal device used for receiving at leastone vocabulary set uploaded by a first user and sending the at least one vocabulary set to a server; a second terminal device which is used for receiving the search information inputted by the seconduser and sending the search information to the server; the server which is used for in response to the received at least one vocabulary set, storing at least one vocabulary set, in response to the received search information, loading the vocabulary sets meeting preset conditions in the stored vocabulary sets, and conducting text processing on the search information based on the loaded vocabulary sets, wherein the text processing comprises at least one of word segmentation processing, keyword extraction and named entity recognition. According to the embodiment, the flexibility of information processing is improved.