Fuente: Wipo "BigData" The invention, which belongs to the technical field of data processing, discloses a public security integrated big data management system comprising a voice acquisition unit, a text conversion unit, a keyword extraction unit and a data uploading unit. The voice acquisition unit is used for preprocessing the alarm voice data to generate a target voice signal; the text conversion unit is used for converting the target voice signal into a standard text; the keyword extraction unit is used for extracting a key title of a standard text; and the data uploading unit is used for classifying and storing the alarm voice signals of the user. The public security integrated big data management system can perform de-noising processing on voice signals acquired in forms of calls and the like, reduces noise influence caused by call background sounds and the like, and facilitates text extraction in subsequent steps; the voice signals are stored in a classified mode, it is guaranteed that the voice signals and the standard text are uploaded at the same time, and the content corresponding to the voice can be quickly known in the later period.