In this paper,the progress and status of the research activities of CiADS subcritical reactor in Reactor Physics Group during 2016-2017 are introduced.1 Conceptual Design of CiADS Subcritical Reactor At the end of 2015,the National Major Scientific and Technological Infrastructure project named“China Initiative Accelerator Driven System(CiADS)”was formally approved by the National Development and Reform Commission.in the CiADS project,the technical route of“superconducting linear accelerator+high power spallation target+subcritical reactor”is determined.Aiming at the construction requirement of CiADS,a conceptual design of subcritical reactor has been finished.