Abstract: In order to improve efficiency of coal mine equipment management, a coal mine equipment information management method based on Data Matrix code was proposed. The method includes Data Matrix code generation and Data Matrix code recognition. Address of server that stores equipment operation information is encoded with equipment inherent information, so as to generate Data Matrix code of coal mine equipment information. Image of Data Matrix code on coal mine equipment is collected through intelligent mobile terminal. After the image is preprocessed by graying, median filtering, binarization and Canny edge detection, the improved Hough transform is used to detect L -shaped line of Data Matrix code, and tilt correction operation is carried out, so as to accurately locate coordinate position of Data Matrix code. Then equipment information contained in Data Matrix code is identified by decoding. The method can accurately record and identify equipment information and improve equipment management efficiency.