Wheat germ improved not only nutritional ingredients, but also the appearance, taste and odor of steamed bread. As seen from Table 3, the control steamed bread was found to have higher overall acceptability values than bread with RWG and DWG. Attention is drawn to the fact that all the breads got positive scores (higher than 5). In particular, steamed bread containing 1–3% germ showed excellent scores as an acceptable product. However, poor qualities such as a dark yellow color, small specific volume, high hardness and low elasticity developed when the germ content rose to 11%. This was likely due to the damaged gluten network induced by moisture competition, the role of glutathione, and the interaction of the flour and germ. This led to a decrease in gas holding capacity during dough fermentation. Furthermore, the enzymes and reducing agents in germ destroyed the network of proteins, starch and water, reduced dough viscoelasticity and holding gas capacity, and thereby decreased the volume and elastic resilience of steamed bread. In addition, DWG had more effect on steamed bread than RWG, probably due to the lack of lipid and glutathione.