In small quantum network

the security of communication information can be guaranteed physically by the application of quantum teleportation

the noise of quantum channel will be bound to interfere with the communication information

leading to the error of code.In order to guarantee the reliability of information communication

a routing protocol of small quantum network is proposed based on quantum error correcting code.According to the routing characteristics of small quantum network

corresponding routing tables are made.On the basis of these routing tables

quantum teleportation can be realized from source quantum node to the nodes within one-hop or two-hop.Correct the errors of code resulting from noise of quantum channel based on error correcting code theory

and handle it accordingly

to ensure the reliability of communication information at data link layer.The security of the protocol is proved in theory.