Abstract: For problems of missed detection, false detection, low efficiency, large error, poor real-time performance and so on existed in manual detection method of borehole depth, angle and direction of coal mine water detection, a water detection video management system of coal mine was designed. The system uses intelligent video identification technology to identify pipe-rod changing action and number and sensor identification technology to identify drilling number and borehole angle, so as to calculate borehole depth separately. The two calculation results are checked to guarantee detection precision. The actual application shows that the system runs stably and realizes the whole process supervision of coal mine water detection.