More and more mobile devices and applications are beginning to use undirected networks. In order to improve the user experience and ensure the quality of network services, edge computing is proposed, which is also an important part of the fifth generation network. As a key technology of 5G networks, NFV and SDN are receiving more and more attention. NFV uses virtualization technology to flexibly deploy network services. At the same time, SDN can provide all information about network topology and resources. The combination of NFV and SDN provides a new approach to network service deployment in edge computing. Due to the performance limitations of the edge server, when the users and devices accessing the network increase, if the edge server cannot provide the corresponding network resources, the network service quality will be degraded. This paper proposes a dynamic virtual network service placement scheme based on network service type, summarizes the characteristics of different network service types for network resource usage, determines the service type when users request network services, and proposes to ensure the optimal utilization of network resources and network delay. The algorithm is dynamically placed and the feasibility of the proposed scheme is proved by experiments.
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