When cytosolic Ca²⁺ concentration is increased under salt stress， cells would activate Ca²⁺-regulated target enzymes or induce Ca²⁺ bind to Ca²⁺ high-affinity receptor proteins. Among them， plant Ca²⁺-ATPases are P-type ATPases， including endoplasmic reticulum Ca²⁺-ATPase（ECAs） and plasma membrane Ca²⁺-ATPase（ACAs）； they are able to translocate Ca²⁺ from the cytosol to apoplast or compartmentalize Ca²⁺ in organelles. Numerous studies have shown that salt tolerance of plants is largely related to their ability to maintain the activities of calcium pump， namely Ca²⁺-ATPases. The activities of Ca²⁺-ATPases in various plant species were sensitive to salt stress； exogenous Ca²⁺ application can alleviate cell injury by salt stress， suggesting that exogenous calcium -mediated Ca²⁺-ATPase might play an important role in intracellular calcium homeostasis and signal transduction. Therefore， this review summarized the types， structures and properties of plant Ca²⁺-ATPase， and the involvement of Ca²⁺-ATPase of subcellular localization in plant response to salt tolerance and the research progress of exogenous calcium and Ca²⁺-ATPase in regulation on plant salt tolerance. It emphasized potential roles of Ca²⁺-ATPases of plant plasma membrane， tonoplast， nuclear membrane， endoplasmic reticulum and Golgi in regulation of salt tolerance in plants， and presented an outlook in the field. This work provided help for a better understanding of physiological and molecular mechanisms of plant salt tolerance and provided new ideas for crop salt-tolerance cultivation.

Superoxide dismutase（SOD） widely presents in plants and can be mainly classified into three categories： Mn-SOD， Fe-SOD and Cu/Zn-SOD. They play different defense roles in cells and enhance plant tolerance. Additionally， Ni-SOD in blue cells and marine organisms remains to be explored. In this paper， the physicochemical properties and mechanisms of action of SOD were analyzed according to the different metal ions contained in SOD， and the role of SOD in plants under stress conditions such as drought， salinity and cold were elucidated， and the role of SOD in plant growth and development in future was prospected， and a reference for studying the mechanisms of plant growth and development under adverse environments was provided.