The phase equilibria and phase diagrams of salt-water systems constitute the theoretical basis for chemical industry of inorganic salts. The fundamental studies on the phase equilibrium can provide firm support for the comprehensive development and utilization of salt lake salt resources. In this paper

the recent domestic and international research advances and methods on phase equilibria of slat-water systems from both experimental and theoretical perspectives are summarized. In particular

the experimental methods on the determination of phase diagrams for stable and metastable phase equilibrium systems as well as the factors which cause the change of phase interval and solid crystal type are presented. In addition

based on the up-to-date theoretical methods including thermodynamic models

statistical mechanics theories and computer simulations

the outline of their principles

current situations and possible extensions toward the investigation of stable and metastable phase equilibrium systems are introduced. Finally

the research hotspots in this domain are discussed along with the expectations on the future development.