Wheat gluten insoluble dietary fiber has special physiological functions. In recent years the attention of domestic and foreign scholars to insoluble dietary fiber from wheat bran has also been increasing year by year. In this paper, the composition and function of wheat bran dietary fiber and wheat bran insoluble dietary fiber were introduced in a brief way. The extraction methods of wheat bran insoluble dietary fiber, such as physical method, chemical method, biological method and chemical-enzymatic method, were introduced briefly. The effect of insoluble dietary fiber from wheat bran on the quality of flour products, such as noodles, steamed bread and bread, was elucidated in order to provide a reference for further research on the extraction method of insoluble dietary fiber from wheat bran and its application in flour products.