In the coming decades, the world Environment and Ocean will face huge challenges. The influence factors include on-going growth of the world population, the limited availability of natural resources and climate change. Due to this reason, 2023 6th International Conference on Environment and Ocean Engineering (ICEOE 2023), as one of the premier forums for presenting developments in Environment and Ocean Engineering, aimed to bring together leading scientists, researchers around the world to discuss the priority topics for Environment and Ocean Engineering in recent years, will be held during December 2-4, 2023 in Hong Kong, China.