The invention discloses a three-dimensional environment model reconfiguration method, equipment and system based on image recognition. The method comprises the following steps: extracting and matching feature points, and carrying out back projection by using the feature points to obtain pixel information; and carrying out stereo matching and iterative updating according to the pixel information. The accuracy of reconfiguration of a three-dimensional scene is improved; and visual and accurate reference is provided for follow-up construction management. The equipment runs on the basis of the method, in a whole construction process, modeling is implemented in real time by computer vision three-dimensional reconfiguration, and a construction scene is recovered visually and clearly. According to the system, images are acquired through a helmet, a camera is arranged on the helmet, terminal equipment is arranged on the background, and project management personnel who do not need to enter a construction site can clearly know the construction process of the site. By the management personnel, a three-dimensional reconfiguration model can be compared with an expected planning model of an expected construction process in BIM in real time, deviation in implementation is discovered in time, and the management efficiency is greatly improved.