This course is designed to provide a comprehensive study and discussion onthe frontier of deep sea geology and geochemistry for graduate students inearth sciences and related fields. The content covers a wide range of topicsfrom basic theory to practical application, including fundamental concepts ofmineralogy, petrology, and geochemistry and their professional application indeep-sea environments. Students will delve into critical geological processessuch as magmatic activity and mantle processes within the Earth, volcanicactions, and hydrothermal activities. The course will also explore submarine seabedprocesses such as early geochemical diagenesis, cold seeps activities,submarine Ferromanganese nodules and crusts, seamount phosphorite, and theirelemental geochemical cycles. Additionally, the course will introduce the latest advancements in explorationand detect approaches under extreme deep-sea conditions, aiming for students tograsp cutting-edge technologies in deep-sea solid and environment sciences.Through theoretical learning and case studies, this course not only enhancesstudents' understanding of deep-sea science but also aims to cultivate theirability to analyze and solve related geological, geological and environmentalissues.