Recently, Network Function Virtualization (NFV) has been getting the attention for reason of operational efficiency, cost savings and service scalability. The NFV can be described as integrating an independent software on the general purposed hardware such as server and switch in order to replace the legacy hardware-based network device. Therefore, NFV can help ensure that carriers can quickly respond to the change of communication environment by shortening lots of cost and time to introduce new network service. In this paper, we design and implement a toolkit for NFV. This toolkit allows the DevOps development of virtual network functions in rapid cycle, which enables the carriers to deploy NFV environment quickly and easily.