The invention relates to a digital video inclinometer which comprises a probe, a measurement room is arranged in the probe and supported on the shell of the probe through a bearing, a scale marking part is arranged in the measurement room and fixed on a sealed chamber, the measurement room is internally injected with insulating liquid, a pointer is arranged in the insulating liquid which is in the measurement room in a floating way and associated with the scale marking part; a videocorder is arranged in the measurement room, a camera of the videocorder is positioned above the scale marking part to record the indication position of the pointer on the scale marking part. The digital video inclinometer directly obtains data influence of a hole deviation angle and a drift azimuth measured by an angulation part of underground machinery by the camera arranged on the inclinometer, thus avoiding the error caused by massive intermediate processes and greatly improving the precision and reliability of the measured data; the electro-mechanical transformation is cancelled, the locking mechanism and the electro-mechanical transformation part of the original inclinometer are cancelled, therefore, the inclinometer structure is greatly simplified. The working condition of the subsurface equipment can be seen directly through the images, and the breakdown situation can be grasped in time.