The invention discloses blood glucose reducing, fat losing and health caring flour, fine dried noodles and a preparation method thereof, and belongs to the technical field of heath care food processing. The blood glucose reducing, fat losing and health caring flour comprises the materials, by weight, 15-25 parts of fiveleaf gynostemma herb, 15-25 parts of kudzu vine root powder, 15-20 parts of red beans, 15-25 parts of coix seed powder, and 60-150 parts of wheat flour. The fine dried noodles comprise the materials, by weight percentage, 60.5-72.2 % of blood glucose reducing, fat losing and health caring flour, 20-25% of soup-stock or water, 5-8% of mushroom, 1.8-3% of flavoring additives, 0.5-1.5% of ginger, and 0.5-2% of edible alkali. According to the concept of homology of medicine and food in traditional Chinese medicine, medicine and food homologous materials of fiveleaf gynostemma herb, kudzu vine root and red beans match with coix seed and wheat, and the flour and noodles are rich in nutrition, taste fresh and mellow due to the soup-stock and mushroom. Besides, the flour and noodles are convenient to carry and have the efficacies of reducing blood glucose, losing fat, strengthening immunity of the organism and the like.