Edge cloud will play an important role in the era of 5G. As an important part in 5G network architecture, it not only provides sinking of cloud resources for the edge deployment of 5G virtualization network elements, but also provides various platform capabilities for third-party applications through the ability opening platform, enabling innovative business to improve user experience. This paper introduces the network structure and evolution mode of 5G NSA and 5G SA MEC edge cloud, analyzes several kinds of factors that affect operators’ construction of MEC edge cloud, and gives the ideal structure composition of MEC edge cloud platform. At last, it lists the key technology of edge cloud and mature scenario case analysis.