In wheat (Triticum aestivum L.), breeding efforts have focused intensively on improving grain yield and quality. For quality, the content and composition of seed storage proteins (SSPs) determine the elasticity of wheat dough and flour processing quality. The endosperm specific NAC transcription factor TaNAC019 regulated starch- and SSP-related genes in wheat grain quality. The elite allele (TaNAC019-BI) of TaNAC019-B is associated with flour processing quality, providing a candidate gene for breeding wheat with improved quality. In this study, we found TaNAC019-BI and TaNAC019-BII have different expression pattern in wheat. In Nongda 3338 which containing TaNAC019-BI, the expression of TaNAC019-B is higher than TaNAC019-A, and in Fielder which containing TaNAC019-BII, the expression of TaNAC019-B is higher than the same TaNAC019-A. Nucleotide sequence alignment revealed a transcription factor TaTF1 binding site mutated in the promoter of TaNAC019-BII. The function of TaTF1 in wheat regluting TaNAC019-B is under intense investigation.