Abstract: According to the research results of the influence of low- temperature stress on the growth and development of plant roots in recent years， this paper systematically elaborated the response mechanism of plant roots to low- temperature stress from the aspects of root morphology， physiological and molecular mechanisms， and root-soil environment. In addition，the regulation measures to improve the ability of plant roots to resist low temperatures were summarized from the aspects of variety，water and fertilizer operation，exogenous chemical control preparations，and microbial agents. It was suggested that phenomics （near-infrared imaging，X-ray，CT imaging，etc.） should be used to strengthen the study of the morphological structure and growth process of plant roots under low- temperature stress in the future. By combining root physiology and ecology with modern molecular biology technologies（proteome，transcriptome，metabolome，etc.），the root response mechanism in plant resistance to low temperatures should be deeply explored， and the research on root and ground interaction should be strengthened to provide a reference for a more systematic and in-depth study on the cold resistance mechanism of plant roots.

Key words: roots, low- temperature stress, physiology mechanism, control measures, molecular mechanism