In this paper, study of a non-contact method, visual monitoring of landslide, camera in real-time monitoring on the fixed point on the landslide surface and installation of the target using close-range, digital image obtained by automatic processing analysis, to calculate the deformation of the earth's surface, through the wireless transmission to the interior monitoring center, combined with real-time landslide appearance image, compared with other monitoring parameters confirm, exploring the whole process monitoring and early warning of landslide.