4G changes our life. 5G, as a breakthrough information and communication technology, will change our society. However, with the large-scale deployment of 5G, from the perspective of development status, the network infrastructure construction of 5G in our country is still facing problems such as large investment demand, high operating costs, high energy consumption, and competition for spectrum resources. Therefore, this article analyzes the difficulties in China's 5G network construction, and specifically proposes to attract social capital and local governments to participate in the construction of 5G network infrastructure, cooperate with power grids and other cross-industry to further promote network construction and sharing. The article also recommends multi-purpose smart tower, Power line Communication and to promote the rational construction of 5G network infrastructure.