The present disclosure discloses a data transmission system of safety patrol on construction project site based on “internet plus” according to the present disclosure comprises a patrol apparatus for collecting and transmitting an on-site panorama image, 3D point cloud data of the scene, location information and construction on-site data; a cloud computing platform for receiving the on-site panorama image, the 3D point cloud data of the scene, the location information and the construction on-site data, and reconstructing a 3D model of a patrol scene based on the panorama images, the 3D point cloud data of the scene, the location information and the construction on-site data; a safety patrol data terminal providing inspection/browse to construction site; the present disclosure enable users to patrol in construction project remotely, reducing workload of the safety production management personnel, improving patrol efficiency, enhancing the intuitive reality of the patrol and the safety patrol level of the construction project; the inspection result is transferred electronically, ensuring the time efficiency of project patrol inspection.