The invention discloses a distribution network core business 3D training courseware APP development method, and relates to Unity3D-based mobile AR APP development. The method comprises the following steps of 1) creating a cloud database; 2) performing target management; and 3) performing AR integration and release. In combination with an AR technology, a sensor technology, a mobile communication technology, a scheduling technology and the like, application of AR to an intelligent terminal is realized. Automatic identification and seamless switching of multiple markers can be realized; adaptivefunctions of illumination change and shielding processing are achieved; the optimization performance of the illumination change and the shielding processing is relatively good; a multi-mode virtuality and reality superposition function is supported and comprises superposition of a three-dimensional model, an animation, a video, a text and the like; rich interactivity is achieved; and a user can perform interactive control on a superposed object through a virtual button, an operation rod and the like.