The utility model relates to a latticed network architecture of OTN mode of assembling, this network architecture include a plurality of network elements, and wherein each network element constitutes the topological network of first annular through physical circuit, the topological network of first annular constitutes the core ring, the core intra -annular increases a plurality of network element and falls into a plurality of crossing annular nucleation thimble nets ring with this core ring, this network architecture still includes bearer layer net ring sum access layer network ring, bearer layer net ring is including at least two core looped netowrk units, access layer network ring is including at least one core looped netowrk unit or bearer layer net looped netowrk unit, the beneficial effects of the utility model are that: this network architecture can reach the best running state, and not resource -wasting, its resource potentiality through optimize making the OTN net obtain abundant performance, and the current each side advantage of integration builds into that network structure is more clear, the operation maintenance is more convenient, circuit production is more high -efficient, the equipment environment is more reasonable, the more level and smooth main line transmission network of capacity expansion and upgrading.