IOP is the leading research institute in China in condensed matter physics and related fields. Through more than 90 years of development, IOP has become a comprehensive and multi-disciplinary research organization engaged in research on basic and applied physics. Its current research activities concentrate on condensed matter physics, optical physics, atomic and molecular physics, plasma physics, soft matter physics, and condensed matter theory and computation physics. There are 12 laboratories and 8 centers in our research system together with a strong technical support system. In 2017, IOP was officially designated by the Ministry of Science and Technology as the Beijing National Laboratory for Condensed Matter Physics. More Information about IOP can be found at www.iop.cas.cn.By the end of 2019, IOP had a total of 825 staff, including 288 of scientific research, 148 of technical support, and 65 of administrative duty. IOP has 14 academicians of Chinese Academy of Sciences and 1 academician of Chinese Academy of Engineering. More than 70 academicians have worked in the institute. Among IOP researchers, 38 obtained the National Outstanding Youth Foundation Grants. Currently, IOP h...as 981 graduate students and 155 postdoctoral fellows.IOP has made many breakthroughs in the fundamental research of physics, e.g. the discoveries of "Weyl fermions in condensed matter", "three-component fermions in the topological semimetal", "Majorana bound states in an iron-based superconductor", "superconductivity in CrAs and MnP", and "a new class of magnetic Skyrmion materials"; as well as the "growth of low-dimensional materials". It plays a leading role in many areas of physics research, such as superconductors, Weyl Semimetal, 2D Materials, theoretical research of integrable models, plasmonics, carbon nanotubes, metallic plastic materials, soft matter/biophysics, and advanced materials, etc.Since 1978, IOP researchers have won 300+ awards, including 8 physics awards of the Third World Academy of Sciences, 1 National Top Award for Science and Technology, 33 National Awards for Natural Sciences, 25 National Awards for Science and Technology Progress, and 9 National Awards for Technological Inventions.IOP has also undertaken or participated in the construction of some large-scale scientific facilities, such as the Synergetic Extreme Condition User Facility (SECUF), two interdisciplinary research centers of Center for Clean Energy and Center for Materials Genome Initiative, in HuaiRou Science City, Beijing, the China Spallation Neutron Source (CSNS) in DongGuan, Guangdong Province, and the Dream Line - Shanghai Synchrotron Radiation Facility in Shanghai.Apart from the current ZhongGuanCun campus, which is focusing on fundamental research, IOP also has three other campuses, that is, HuaiRou campus (in HuaiRou Science City, suburban Beijing) to develop large scientific facilities and interdisciplinary research centers, LiYang campus (in Jiangsu province) to undertake science commercialization and academic exchanges, and DongGuan campus (in Guangdong province) to develop the Songshan Lake Materials Laboratory.