Abstract: Casuarina equisetifolia, Nerium indicum and Acacia confuse were treated with NaCl in greenhouse through leaf surface spray and root system absorption, after which the plant status and growth rate were observed and measured. The results showed that: (1) according to the plant status, C. equisetifolia can hold a concentration of 3.0% root-salt and leaf-salt, N. indicum can survive at 1.0% concentration root-salt and 3.0% concentration of leaf-salt, A. confuse can sustain at concentration of 2.0% root-salt and a concentration of 0.6% leaf-salt. (2) The salt-resistant ability turns out to be weakening are C. equisetifolia, N. indicum and A. confuse. (3) The indexes of plant status, survival rate and growth rate of plant height can well indicate the effect of plant on salt stress, the assignment method can be used for a quick survey of vegetation salt-resistant ability; (4) C.equisetifolia is recommended as a priority species for the vegetation restoration in condition of saline soil and sea spray while N. indicum is taken as the pioneer in lower saline soil of drought area.