Abstract: The disclosure relates to a 3D reconstruction method based on an on-site edge-cloud collaboration for a cultivated land. An edge-cloud collaborative computing architecture is used, such that the edge computing device performs advance calculations after image data is acquired. The edge computing device measures performances of itself and a cloud data center, and arranges and deploys multiple 3D reconstruction containers in the cloud data center for the 3D reconstruction. Multiple reconstruction containers in the cloud data center perform reconstruction tasks in parallel to quickly obtain 3D reconstruction results, and provide them to the edge computing device for retrieval and download. This method is mainly oriented to agricultural project monitoring scenes, to reduce reconstruction time and a data transmission amount of 3D models, in order to improve a response speed and a quality of 3D reconstruction results, for large-scale on-site monitoring, acceptance, and review purposes of agricultural projects.