The invention relates to a crisp wheat-bran cookie rich in multiple coarse cereals and a making method of the crisp wheat-bran cookie rich in the multiple coarse cereals. The crisp wheat-bran cookie comprises, by weight, 50-200 parts of wheat bran, 100-200 parts of wheat weak strength flour, 10-50 parts of bagasse, 10-50 parts of oat, 10-50 parts of buckwheat, 10-50 parts of barley, 40-150 parts of salt-free butter, 10-100 parts of maltitol, 10-100 parts of erythritol, 20-80 parts of egg liquid, 5-30 parts of skim milk powder, 0-5 parts of black sesame, 0-5 parts of walnut kernels and 0-5 parts of almonds. The making method of the crisp wheat-bran cookie includes the steps of raw material processing, smashing processing, panada mixing, pattern squeezing molding, baking and cooling packaging, the nutrition contents such as dietary fibers, egg white, fat and vitamins in the wheat bran, the bagasse, the oat, the buckwheat and the barley are kept and sufficiently used, and the crisp wheat-bran cookie is low in rigidity, good in crisp performance and delicate in taste.