At present

5 G technology has become a hot topic in the field of communication in China.The implementation of 5 G can create conditions for new industries such as Internet of Things and Cloud Computing

which rely on network connection.At present

5 G construction site resources are limited

so it is necessary to strengthen the infrastructure construction and optimization of 5 G mobile communication transmission network.This paper analyses the requirements of 5 G technology for transmission network

compares the advantages and disadvantages of the two transmission technologies

and puts forward some strategies for optimizing the construction of 5 G transmission network.