Taking the alluvial plain oasis as a study case, the available contents of B, Mn, Zn, Fe, and Cu in three soil types were analyzed with SPSS. The results showed that:①According to “Plentiful-lack index of soil available trace elements in Agricultural Libraries all over China”, available Mn was insufficient, available Zn and Fe were moderate, available Cu was rich, and available B was very plentiful. ②Significant negative correlations were observed between available contents of Mn, Zn, Fe, Cu and soil pH. The effect of organic matter content on available Fe and Cu was significant in arid area oasis, which was significantly different from humid area.③There were differences in available contents of B, Zn and Fe among different soil types, the available contents of trace elements in the alluvial soil were significantly different from the saline soil and gray desert soil.