The effects of arbuscular mycorrhizal fungi (AMF) on contents and allocations of Na⁺, K⁺, Ca²⁺, Mg²⁺ and growth of asparagus variety ‘NJ978’ under salt stress were studied in greenhouse. The results showed that the height, fresh weight and dry weight of the seedlings decreased significantly under NaCl treatment, while the inhibition of seedling growth was alleviated by AMFinoculation. Na⁺ contents of asparagus roots and its aerial part under salt stress were higher than in the control, while the contents of K⁺, Ca²⁺ and Mg²⁺ decreased significantly. Under salt stress, AMFinoculation increased the contents of K⁺, Ca²⁺ and Mg²⁺ of the seedling roots by 76.9%, 23.1% and 22.5%, respectively, while the content of Na⁺ decreased by 27.4%; the contents of K⁺, Ca²⁺ and Mg²⁺ of the seedlings aerial part increased by 58.4, 50.4% and 76.0%, respectively, while the content of Na⁺ decreased by 42.3%. Meanwhile, Na⁺/K⁺, Na⁺/Ca²⁺ and Na⁺/Mg²⁺ in roots and aerial part of seedlings were significantly decreased by AMFinoculation under salt stress, and the selective absorption of K⁺, Ca²⁺, Mg²⁺ (AS_K,Na, AS_Ca,Na, and AS_Mg,Na) was significantly increased, and the selective transportation (TS_K,Na, TS_Ca,Na and TS_Mg,Na) were increased. These results indicated that AMFinoculation could improve tolerance of asparagus seedlings to salt stress via regulating the uptake and allocation of ions in different organs.