Fast network devices with RDMA support have been price-compatible with traditional network primitives such as Ethernet,and it’s now widely deployed in modern data centers.RDMA can be used in two ways.Firstly,it can optimize the messaging primitive in distributed applications.The second way is to redesign the applications with RDMA’s onesided features.One-sided features provide high CPU utilizations and high network performance,but the system should be redesigned.The research progress of RDMA was introduced.An overview on the research efforts on using RDMA for distributed systems was presented.The works on how to use RDMA to redesign systems and the works on how to better leverage RDMA were included.The future research directions were also put forward.