The invention discloses a dietary fiber buckwheat cookie. The dietary fiber buckwheat cookie comprises, by weight, 300-350 parts of buckwheat powder, 60-70 parts of barley grass powder, 40-50 parts of purple yams, 10-15 parts of stachys sieboldii, 4-5 parts of black lycium chinense, 2-3 parts of ficus carica, 3-4 parts of dogbane leaves, 2-3 parts of grape leaves, 4-5 parts of pitaya flowers, 1-2 parts of viola diffusa ging, 3-4 parts of basil seeds, 1-2 parts of pogonatherum crinitum, 6-8 parts of Chinese yam starch, 2-3 parts of baking soda, 8-12 parts of nutrition powder and a proper amount of rice wine and sesame oil. According to the dietary fiber buckwheat cookie, crab shells and chicken bones are processed into the nutrition powder, the functions of bone supplementing, marrow adding, muscle and tendon nourishing and fracture setting can be achieved, and the nutritive value of the cookie is higher; the purple yams, the stachys sieboldii and the like are added, the cookie is rich in dietary fibers, gastrointestinal tract movement of the human body can be stimulated, and the cookie has the anti-cancer and weight loss effects, the detox beauty effect, the intestine and stomach coordinating effect, the bowel relaxing effect, the human body metabolism stimulation effect and other health care effects through the barley grass powder.