A ten-flavor grain-bean-medicine-vegetable nutritional diet-therapy noodle is composed of the following raw materials: germ wheat flour, germ oat flour, buckwheat seed flour, corn seed flour, sweet potato powder, potato flour, low-fat soybean powder, low-fat black soybean powder, low-fat mung bean powder, low-fat peanut powder, mint juice, celery juice, carrot juice, swamp cabbage juice and amaranth juice. Before preparation of the noodle, full wheat grains and full oat grains are respectively cleaned and immersed, and are respectively subjected to germination accelerating by utilizing germination accelerating technology, when growing to 1-3 cm, the germs are respectively dried and grinder into powder for reservation; buckwheat seeds are cleaned, dried and grinded into powder for reservation; soybean, black soybean, mung bean and peanut kernels are respectively cleaned, subjected to mechanical low-temperature oil pressing and degreasing, and grinded into powder for reservation; mint, celery, carrot, swamp cabbage and amaranth are respectively cleaned, cut and juiced for reservation. The preparation technology of the noodle comprises: burdening according to various noodle formulas, stirring uniformly, pressing dough for forming, drying, collecting, cutting, metering, packaging and listing. Some diabetic patients in Changsha all have normal blood sugar for continuous six years after eating the noodle provide by the invention for continuous six years, and various symptoms of diabetes are disappeared.