The invention relates to frozen fermented glutinous rice or rice noodle products and a key preparation method thereof. The products comprise a frozen pure fermented glutinous rice product and a mixedfrozen rice noodle product of fermented glutinous rice and other rice noodles. The key preparation method adopts drying and freezing techniques. Limited by the problems that the fermented glutinous rice is not easy to form due to high water content and not easy to dewater due to high sugar degree, starch is easy to age in products, and the like, the varieties of products using the fermented glutinous rice as a raw material are few, all the products cannot serve as convenient staple food, and the market rate is extremely low. The frozen fermented glutinous rice or rice noodle products are characterized in that glutinous rice and the like are used as raw materials to be fermented into fermented glutinous rice, and then the fermented glutinous rice is subjected to boiling, grinding, drying (partial dewatering) or addition of rice noodles, cooling, forming and freezing to obtain cooked or half-cooked frozen products. When eaten, the frozen fermented glutinous rice or rice noodle products are heated by roasting, frying, deep-frying, steaming, microwaving and the like. The products provided by the invention are purely natural fermented food, are sour, sweet, mellow, fragrant and chewy inmouthfeel, can serve as staple food or non-staple food, can be subjected to large-scale and standardized production, have a long shelf life, a simple and convenient preparation method, simple equipment and low cost, and can be prepared at home.