Abstract: Soil salinization has adverse effects on agricultural productivity.It is a major challenge for agricultural researchers to reduce the adverse effects of salt damage.Exogenous substances can reduce salt damage by enhancing photosynthesis,improving osmotic regulation,increasing antioxidant enzyme activity,regulating ion transport and decreasing ion toxicity.In this paper,we summarized the effects of seed germination,plant growth and leaf development in rice under salt stress,which led to physiological changes such as Na+/K+changed,stomatal conductance depression,photosynthetic rate reduction and content of reactive oxygen species elevation and effects of biomass and yield.We explored the regulatory effects of hormones,organic osmotic regulators,gas signaling and ion-based exogenous substances on growth under salt stress in rice and prospected mitigation methods of rice under salt stress in the future.