养殖密度影响鱼类福利是鱼类生理生态学、福利学和种群生态学研究中的关键问题,已受到各国学者的关注。文章综述了养殖密度影响鱼类福利的主要研究进展,讨论了鱼类死亡率、生长、摄食以及应激反应等福利指标随养殖密度变化的规律及其描述方法；在此基础上,对鱼类福利指标随不同放养密度变化规律的研究以及应用前景进行了展望。 Farming density affects fish welfare is a key issue in the study of fish physiological ecology, welfare and population ecology, which has attracted the attention of scholars from all over the world. In this paper, the main research progress on fish welfare influenced by stocking density is reviewed. The rules of fish welfare, such as fish mortality, growth, feeding and stress response along with the variation of stocking density are discussed. On the basis of this, Welfare indicators with the stocking density of the law of variation and application prospects are prospected.