Abstract: The insoluble dietary fiber（F-IDF） from tartary buckwheat shell was extracted by acid method, alkali method and enzymatic method, and its physicochemical properties were evaluated. On the basis of single factor test, the extraction process of insoluble dietary fiber bound phenol（F-DFPP） from tartary buckwheat shell was optimized by response surface method. The results showed that the extraction rate of F-IDF was 59.45%±0.87% by α-amylase-papain complex enzyme method. The physicochemical properties of F-IDF obtained by different methods were significantly different, and the F-IDF extracted by enzymatic method and acid method had higher oil holding capacity. The water holding capacity and expansion of F-IDF extracted by alkali method were the best. The optimum extraction parameters of F-DFPP were as follows: the ratio of material to liquid was 1∶20（g/mL）, the amount of cellulase was 8%, the ultrasonic power was 180 W, and the extraction time was 2 h. The content of binding phenol was（7.45±0.05）mg/g. Cellulase can make the structure of dietary fiber become loose and porous, which is conducive to the extraction and preparation of bound phenols. This study provides data support for the comprehensive utilization of tartary buckwheat shell.