The invention discloses a making method for sweet potato dried tofu. The sweet potato dried tofu is made by the following raw materials in parts by weight: 1000-1200 parts of soybean, 10-12 parts of gracilaria lemaneiforms, 10-12 parts of brasenia schrebei, 35-40 parts of sweet potato, 10-15 parts of salviae miltiorrhizae, 10-12 parts of common scouring rush herb,10-12 parts of petasites tatewakianus kitam, 10-12 parts of radix angelicae dahuricae, 10-12 parts of water dropwort, 10-12 parts of pumpkin flower, 5-8 parts of potentilla chinensis, 20-30 parts of capsicum annuum, 5-8 parts of pitaya flower,10-12 parts of rhodiola, 10-12 parts of polygonatum odoratum, 10-12 parts of lentinula edodes, 10-12 parts of mulberry leaf, 8-10 parts of lily, 8-10 parts of lentinula edodes, 5-8 parts of perilla leaf, 3-6 parts of hericium erinaceus, 3-4 parts of amomum tsao-ko. Compared with the prior art, various edible wild herbs and medicinal and edible traditional Chinese medicine health-care ingredients are added into raw materials of the dried tofu, the sweet potato has the functions of tonifying the spleen and stomach, aiding digestion, nourishing kidney and boosting essence, and reducing glucose, bean dregs are reduced by adopting repeated grinding process, dietary fiber in the bean dredges are added into soybean milk so as to facilitate the gastrointestinal motility of a human body and help defecation; and brine contains various traditional spices, and ingredients of American ginseng and the like, thereby enhancing the human immunity and prolonging the life.