The invention relates to a retrieval technology, and discloses a method and a device for providing a retrieval associated word, which are used for improving the accuracy of the retrieval associated word and the retrieval efficiency of a search engine; and the method is characterized by comprising the steps that: aiming at the retrieval keyword which is input by a user, a fuzzy matching mode is not adopted to obtain the retrieval associated word, target word segmentations are extracted on the basis of the text data which is contained in a webpage of the retrieval keyword, then the association degrees between each target word segmentation and the retrieval keyword are calculated, the target word segmentations which have the association degrees reaching a set threshold value are presented as the retrieval associated words, so a logical association relation with the retrieval keyword and other retrieval associated words which have or do not have the fuzzy matching relation can be obtained according the information content which is contained in the webpage of the retrieval keyword, accordingly, the information accuracy of the retrieval associated words is improved, the omission of part retrieval associated words is avoided, and furthermore, the retrieval efficiency of the search engine is effectively improved.