Soil salinization seriously hampers agricultural development and impacts the ecosystem.Symbiotic relations formed between arbuscular mycorrhizal fungi (AMF) and host plants are widespread in natural environments,and have enormous adjustment function because of their enhanced saline-alkali tolerance ability.In this review,we discuss AMF-plant symbiosis salt tolerance mechanism,with emphasis on the following three aspects:developmental effects of salt stress on the AMF,effects of AMF on plant growth under salt stress,and internal mechanism of AMF-enhanced salt tolerance in plants.Furthermore,this review also probes into the current challenging issues and prospects of research in the near future.