The data line extraction method supports three data extraction methods: data line, infrared and Bluetooth. The data line extraction method has intelligent recognition function. It can automatically light the corresponding data line according to the confirmed mobile phone model, without manual search of the data line. The extraction speed is about five minutes to automatically extract information, pictures, address books and other mobile content. The generated report can be quickly searched by keyword search of report exported by USB device, and the clues can be quickly searched. Celldeck has the function of security erasure to improve the speed of case investigation. It is used to erase sensitive and confidential information extracted by celldeck device and prevent information leakage. Memory card reading supports 15 mainstream multimedia memory card network shielding cards to ensure that mobile phones do not receive, send and cover the original data when extracting content.