International Workshop on Smart Ocean Information Science and Technology was successfully held in Jade Emperor Hotel from June 17th to 18th, 2019. The workshop was organized by the College of Optical Science and Engineering, Zhejiang University and co-organized by Oxford University. The aim of the workshop is to attract experts worldwide to cooperate in the fields of Marine optical remote sensing, Sonar detection, Underwater communication and other information science and technology, and to promote the interdisciplinary development of marine information science and technology, and enhance the scientific and technological level and academic influence in related fields.