The invention discloses a case-related electronic data evidence obtaining management system, and relates to the technical field of electronic evidence collection and face recognition. The system comprises a suspect management module, a file management module, a system module and a face comparison retrieval module; the suspect management module comprises data query, addition, modification and deletion; and the file management module comprises data query, addition, modification, deletion, uploading and encryption. according to case-related electronic data forensics management system. A suspect management module, the File management module, the system module and the face comparison retrieval module are arranged; The image and video file data are acquired from a suspect mobile phone through volatility data acquisition, electronic data analysis, file filtering, electronic data file encryption and decryption and face comparison retrieval, concentrated storage management is carried out, query, filtering and analysis can be carried out, associated suspect data information is queried through face comparison analysis, and a more perfect judicial basis is provided for criminal investigation work.