Data packet retrieval method and device and storage medium

The invention discloses a data packet retrieval method and device and a storage medium, and the method comprises the steps: capturing an original data packet transmitted through a high-speed network, and obtaining an extended data packet; storing the extended data packet in a corresponding data file according to a directory structure, and determining a file name according to a timestamp of a specified extended data packet stored in the data file; retrieving the data files in the file name list according to a binary search algorithm to obtain candidate data files and candidate data packets; and retrieving a target data packet from the candidate data packets according to the retrieval request and the test flow mapping table. A captured original data packet is stored in a corresponding data file according to a directory structure, the data file is named by a timestamp of a specified extended data packet contained in the data file, and during retrieval, a candidate data packet is obtained through quick retrieval