Method and system for detecting medical negative terms

The invention provides a method and system for detecting medical negative terms. The method and system for detecting medical negative terms comprises: acquring an electronic medical record text and anindex word segmentation result obtained by indexing the electronic medical record text through a search engine; processing the index word segmentation result according to the electronic medical record text to obtain a new index word segmentation sequence; extracting a medical negative term from the new index word segmentation sequence; and marking the medical negative term to restore and output anew index word segmentation result. The method can search a medical term with negative significance in an index word segmentation result obtained by an electronic medical record search engine, converts the medical term with negative significance into words with negative marks and obtains a new index word segmentation result finally, so that the electronic medical record search engine can accurately distinguish clear and n