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In order to solve the problems of three-dimensional active optical network, such as long path configuration time, high insertion loss of optical router and high network hardware overhead, this paper designs adaptive routing algorithm and nonblocking, low-loss optical router. The adaptive routing algorithm uses theXYZdetermines the routing algorithm to make the first judgment of the port. Then it make a second judgment according to the blocking condition, and finally choose the nonblocking and short distance port as the node output port. Optical routers with 6 ports in the layer and 3 ports in the layer are designed to replace optical routers with 7 ports for three-dimensional communication. The experimental results show that when the adaptive routing algorithm is used for routing calculation, the delay of path establishment is small and the blocking is low. The number of waveguides and micro-ring resonators required by optical routers is small, and the insertion loss is small. The average insertion loss is only 0.88 dB and the optical network hardware has low overhead.