The invention discloses fine dried noodles low in glycemic index and a making method thereof. The fine dried noodles are made from, by weight, wheat flour 25%-35%, soybean flour 25%-35%, purified water 20%-30%, buckwheat powder 1%-1.5%, oat powder1%-1.5%, isolated soy protein powder 4%-4.5%, dietary fibers 4%-4.5%, konjac powder 0.5%-1.5% and mineral substance 0.5%-1.5%. The fine dried noodles are based on the low-GI-value coarse cereal powder, use the added protein, dietary fibers, mineral substance and the like as nutritional materials, have good eating taste and belong to a high-fiber-content and low-fat healthy food. The fine dried noodles are suitable for high-glucose people, patients with diabetes and populations needing low-glycemic-index foods and further have the functions of eliminating toxin, beatifying face, dredging the channels, losing weight, relaxing the bowels, promoting appetite and the like.