The invention discloses a spleen-invigorating and stomach-nourishing water caltrop flour. The flour is prepared from the following raw materials by weight: 130 to 180 parts of whole wheat flour, 30 to 40 parts of water caltrop powder, 14 to 18 parts of red kojic rice, 20 to 30 parts of corn kernel, 6 to 8 parts of cedronella, 15 to 20 parts of rose hip, 10 to 15 parts of Chinese wampee fruit, 8 to 12 parts of fig, 1 to 2 parts of gorse, 2 to 3 parts of Poria cocos, 3 to 5 parts of basil seed, 1 to 2 parts of inula root, 3 to 5 parts of finger citron, 2 to 3 parts of canton love-pea vine, 1 to 2 parts of polyalthia root, 2 to 4 parts of a nutrition additive and a proper amount of apple vinegar. According to the invention, the water caltrop powder, the red kojic rice and the corn kernel are added into the flour, so simplex composition of the flour is improved, nutritional ingredients in the flour are enriched, and the water caltrop flour can better perform qi-benefiting, spleen-invigorating, stomach-nourishing, digestion-promoting, cancer-preventing, cancer-resisting, detoxifying, fat-reducing, beauty-fostering and skin-care effects; through addition of the three fruits, the water caltrop flour has more substantial spleen-invigorating and stomach-nourishing effects, rich taste and tangy fragrance.