The invention provides a making method of milk-flavor potato staple food bread. The milk-flavor potato staple food bread is made from 300 parts of fresh potatoes, 900-1,200 parts of bread flour, 200 parts of natural potato fermentation seeds, 200-240 parts of butter, 100-120 parts of white granulated sugar, 3-5 parts of salt, 1-2 parts of ground cinnamon, 12-14 parts of yeast, 100-120 parts of egg pulp and 500-600 parts of water. The making method includes the following steps that 1, the natural potato fermentation seeds are prepared; 2, basic dough of the milk-flavor potato staple food bread is mixed; 3, milk-flavor potato dough is mixed; 4, the dough of the milk-flavor potato staple food bread is shaped and formed; 5, the milk-flavor potato staple food bread is baked. The potatoes and the butter are mixed to different degrees, and the blended flavor of the potato flavor and the milk flavor can be generated; the taste of the bread is increased layer by layer from outside to inside, the flavor is turned strong from weak, nutrients are rich, and the bread is suitable for being eaten by people of all ages.