Abstract: Objective To search the differentially expressed genes in Uigur and Kazak patients with and without type 2 diabetes mellitus. Methods The differentially expressed cDNA bands were isolated by fluorescent mRNA differential display from peripheral blood leucocyte of the Uigur and Kazak patients with type 2 diabetes mellitus and the normal controls. After being cloned, all cDNA fragments were sequenced, then underwent sequence analysis, homogenous comparison，and Northern blot analysis. Result Z5、Z8、Z15 differentially expressed cDNA fragments were found.They were over-expressed in the normal controls and were lower or scarced in the Uigur and Kazak patients with type 2 diabetes mellitus. They were selected for sequencing and hybridization. Z5、Z8 showed highly homologous to cellular repressor of E1A-stimulated genes，Z15 are unknown. Conclusion The three differentially expressed genes might have a relation with type 2 diabetes mellitus.