The invention provides bone soup for knife noodles and a preparation process thereof. The raw materials comprise the following components in parts by weight: 100 parts of pig
bone stock, 10 parts of thick crucian soup, 5-8 parts of floating oil, 3-12 parts of Chinese yams, 0.8-1.5 parts of dried small shrimps, 0.1-0.3 part of scallops, 5-10 parts of salt, 3-8 parts of
sugar, 3-5 parts of
monosodium glutamate, 0.1-0.8 part of I+G, 0.05-0.2 part of
disodium succinate and 0-0.3 part of white pepper
powder. The characteristics of different raw materials are fully considered, meanwhile, the flavorsof the different raw materials are utilized, the bone soup is mer in freshness by adding fish soup, different raw materials are utilized to provide different
flavor peptides,
flavor amino acids are richer, and the raw materials are mutually synergistic, so that the
flavor of the bone soup is mellow; the fish soup is added with
yeast to remove fishy smell of the fish soup, and
papain is added forcutting residual proteins to form more peptides and amino acids which can be better dissolved in the soup; and the Chinese yams are added to utilize the thickening property of
starch and increase theresidence time of the bone soup in the
oral cavity so as to fully embody the delicious taste of the bone soup.