网络共享在4G阶段已成为运营商降低运营成本、加快业务上市及增强品牌竞争力的重要手段。在5G阶段，有必要进一步探索5G多运营商共享共建模式。文章首先介绍了5G网络共享面临的机遇与挑战，在深入研究第三代合作伙伴计划（3GPP）关于5G共享标准化进展的基础上，给出了端到端共享5G网络的技术方案；同时，针对5G共享的难点问题进行分析，给出了可行性部署建议；最后，针对室内5G单独建设与共建共享进行了造价测算，测算结果显示，共建共享略有收益。

Network sharing has become an important means for operators to reduce operating costs, speed up business listing and enhance brand competitiveness in the 4G stage. In the 5G phase, it is necessary to further explore the 5G multioperator sharing comodeling model. Firstly, this paper introduces the opportunities and challenges faced by 5G network sharing. On the basis of indepth study on the standardization progress of 5G sharing in 3GPP, the technical scheme of endtoend 5G network sharing is given. At the same time, some difficulties of 5G sharing are analyzed, and the feasible deployment suggestions are given. Finally, this paper calculates the cost of indoor 5G single construction and coconstruction with sharing, and the results show that coconstruction and sharing have slightly more benefits.