Web 3D rendering and loading optimization method based on multiple granularities

The invention discloses a Web3D rendering and loading optimization method based on multiple granularities. The method comprises the steps that an edge server communicates with mobile equipment to construct a rendering and loading calculation service environment based on multiple accesses; establishing a multi-granularity animation unit library, separating animation data and model data in the three-dimensional model through an automatic or manual calculation method, and further decomposing the animation data to establish a multi-granularity animation unit at a server side; performing logic analysis and semantic annotation on the multi-granularity unit, and establishing a multi-granularity animation unit database for a user to construct an interaction request so as to provide animation data service; a server and client coordinated animation data request and loading mechanism is adopted, when an interaction request is established, a coarse-grained module number in a cache and interaction request data form a requ