Abstract: With the booming construction and development of coastal nuclear facilities and nuclear technology utilization projects in China and neighboring countries, there is an urgent need to establish an unified and standardized marine radioactivity monitoring technology system for marine radioactive environmental safety and risk assessment. This article reviews the current marine radioactive sample collection specifications, marine radioactivity monitoring technical standard system, marine radioactivity monitoring and analysis method system, marine radioactivity quality evaluation system and quality assurance system, and puts forward recommendations and references for the development of marine radioactivity monitoring technology system.