Machine-to-Machine(M2M) services are thriving enormously recently, considered as a key feature for upcoming era. However there are several problems for wider deployment, such as network management. Software-Defined Networking (SDN) is a possible solution for this by separating control and forwarding, which enables new kinds of network management. In this paper, we suggest an improved scheme for M2M services using SDN for more flexible and dynamic control. We conduct a simulation on dynamic routing in SDN-based network and analyze the performance compared to the legacy network. It showed that there are visible enhancements in the performance when we use SDN.