Abstract: Among various abiotic stresses,the salt stress is one of the most severe environmental factors responsible for the reduction of crop yield.With the development of molecular biology,the research of salt stress made great progress in gene cloning,analysis of its structure and gene expression.This paper reviewed small molecular osmotic substances,Late embryogensis abundant proteins,channel proteins,salt stress-related genes,signal transduction genes,transcriptional factors.Meanwhile prospects for the research are provided.