In order to promote the development of optics and optoelectronics, strengthen international academic exchanges and cooperation for graduate students, IONS Xi'an was held from 24—28 April 2017. This is the fourth time for China and first time for Xi'an to hold this conference. IONS Xi'an was jointly held by the Chinese Academy of Sciences (CAS), The Optical Society (OSA), Xi'an Institute of Optics and Precision Mechanics (XIOPM) and Nanjing University OSA student chapters. The conference allowed a number of chapter representatives from famous universities or institutes around the world to showcase their chapter activities and exchange their experiences in managing their chapters during the "chapter management communication" session. In addition, more than 150 young scholars and 3 professional companies attended the conference. An Pan, the president of the XIOPM OSA Student Chapter was the conference chair. 8 distinguished experts were invited to give plenary talks during the conference including Prof. Sune Svanberg (Chairman of Nobel Committee for Physics in Royal Academy of Sciences), Prof. Katarina Svanberg (Former Chairman of SPIE) and Prof. Jannick Rolland (Associate Director of the R.E. Hopkins Center for Optical Design & Engineering, University of Rochester), Gongru Lin (President of the Photonics Society of Taiwan, National Taiwan University), Yanqing Lu (Winner of Changjiang Distinguished Professor and Young Distinguish Scholar Funding, a fellow of OSA), Xiaowei Sun (Winner of "1000 Talent Award"), Zhiyi Wei (Winner of State Natural Science Award and Young Distinguish Scholar Funding), Rim Cherif (2017 OSA ambassador). 2 invited talks were given by Prof. Xuanhua Li of Northwestern Polytechnical University and Dr. Xusan Yang of Peking University. There were 75 oral presentations. During the 3-day conference, young scholars from different colleges and countries discussed the latest improvements, future developments and challenges in the field of optics and optoelectronics. 12 presenters were awarded for their excellent performance during the conference.