NIR is an open source cloud computing enabled content based image retrieval system. With the development and popularization of cloud computing, more and more researchers from different research areas do research with the help of cloud computing. Nowadays content based image retrieval as one of the challenging and emerging technologies is high computation task because of the algorithm computation complexity and big amount of data. As based on cloud computing infrastructure, NIR is easy to extent and flexible for deployment. As an open source project, NIR can be improved on demand and integrated to other existing systems. This paper presents our ideas, findings, design and the system from our work of NIR.