The invention discloses sucrose-free healthy rice noodle marinating liquid and a preparation method thereof. The sucrose-free healthy rice noodle marinating liquid is prepared through mixed boiling ofa spice packet, a seasoning packet and main materials in parts by weight, wherein the spice packet comprises star aniseeds, fructus tsaoko, cassia twigs, cassiabarktree fruits, fennel fruits, Chineseprickly ash, amomum cardamomum, bay leaves, galanga, villous amomum fruits, rhizoma kaempferiae, radix angelicae, dry red peppers, fructus caryophylli, cloves, areca seeds, lingdera thomsonii allen,leaves and bark of clausena excavata, licorice roots, Indian long peppers, lemongrass herbs, semen myristicae, nardostachys jatamansi roots, anisochilus carnosua, old ginger, fermented soya beans andfructus momordicae; the seasoning packet comprises salt, fructus momordicae sugar, fermented bean curds, monosodium glutamate, a light soy sauce, a dark soy sauce, Baijiu of 50 vol or above, and whitevinegar; and the main materials include ox bones. The marinating liquid disclosed by the invention maintains sweetness in the marinating liquid, is suitable for diabetics to eat, is rich in nutrition, and cannot cause symptoms of dry throat, throat pain and the like after being eaten for a long time.