The invention discloses a sensitive information query method based on deep learning, which comprises the following steps: step 1, carrying out word segmentation processing on a text to be queried, andthen converting the text to be queried into a feature vector; and 2, inputting the feature vector obtained in the step 1 into a neural network model, outputting the similarity with a sensitive word library, if the similarity is higher than a threshold value, judging that the to-be-queried text contains sensitive words, and outputting a corresponding sensitive word result. According to the sensitive information query method based on deep learning, on one hand, by setting the word segmentation rule and training and updating the word segmentation rule, accurate word segmentation processing can be flexibly carried out on the text, and the word segmentation accuracy is improved; and on the other hand, by introducing an artificial intelligence technology, adopting a deep learning method and constructing a neural network model, the text is accurately and effectively recognized, the query accuracy is improved, and the query efficiency is improved.