The invention relates to a method and a
system for constructing a 3D scene in a digital twin
system. The method comprises the following steps: in response to a scene design operation, combining target components, and constructing a 3D
scene graph matched with a physical scene; constructing a data service interface of the 3D scene according to the
data source corresponding to each component in the 3D
scene graph; according to
data information of a
data source corresponding to the data service interface, a
label of the 3D scene is set, and the
label is bound with at least one field of data of the data service interface; the labels comprise titles and numerical values; according to the information of the 3D scene, a model
assembly of the corresponding 3D scene is constructed, and the information of the 3D scene comprises a 3D
scene graph, a data service interface and a
label. According to the method, the label of the 3D scene is bound with the at least one field of the data of the
data source, so that the binding of the 3D scene and the data source is realized, the problem of combining the data source and the 3D scene model is solved, the adaptability is better, the development process is simplified, and the development efficiency is improved.