An educational resources service platform based on campus local area network and inter-institutional metro backbone network provide two services that share two resources at different levels.The model

with which the educational resource is shared inter-institutionally by metropolitan areas

has sufficiently enhanced the utilization rate of the educational resources in the region

so that reconstruction and waste of educational resources was avoided and a stable network infrastructure for regional education reform and resource sharing through cloud computing was established.Through cloud computing technology

the platform shared by two-level educational resource of metropolitan formed a two-level sharing model consisting of metropolitan area and institutional private educational resources by means of cloud

thus the train of thought and methods of construction and sharing of educational resources were enriched.