The invention relates to the field of foods, in particular to potato dietary fiber bread and a making method of the potato dietary fiber bread. The potato dietary fiber bread comprises, by mass, 10 parts to 40 parts of potato coarse dietary fiber starch, 10 parts to 40 parts of potato coarse dietary fiber submicron powder, 10 parts to 20 parts of high-hydrostatic-pressure synergetic enzymatic hydrolysis modified potato coarse dietary fiber powder, 4 parts to 12 parts of extrusion potato coarse dietary fiber powder, 5 parts to 12 parts of potato starch, 5 parts to 13 parts of potato modified starch, 2 parts to 6 parts of food gum, 1 part to 3 parts of egg white, 0.5 part to 3 parts of sugar, 0 part to 1 part of salt and 1 part to 3 parts of yeast. The potato dietary fiber bread does not contain gluten, the contents of protein, mineral substances, dietary fibers, vitamins and antioxidants are obviously higher than the contents of protein, mineral substances, dietary fibers, vitamins and antioxidants in existing wheat bread, and the potato dietary fiber bread is suitable for being eaten by the crowd allergic to wheat or celiac disease patients.