In this paper，10 strains of ACC deaminase-producing bacteria were isolated from three soil samples from the rhizosphere soil of Halostachys caspica in saline-alkali soil of the 103 group in Wujiaqu，Xinjiang.By measuring the ACC deaminase activity and salt tolerance of these 10 strains，the results showed that 4 strains of them had higher ACC deaminase activity，and 4 strains were able to grow at 12% salt(NaCl)concentration.Strain W5，W8 and W9 with excellent salt-tolerance and high ACC deaminase activity were selected for identification.After physiological and biochemical experiments，Biolog identification，and 16S rDNA sequencing，the identification results showed that W5 and W8 were Brevibacterium casei and W9 was Rhizobium pusense.