The invention relates to the technical fields of foods and technologies thereof, and discloses dried crucian carp and snakehead fish floss and a preparation method thereof. The dried crucian carp andsnakehead fish floss comprises the following raw materials in parts by weight of 80-100 parts of crucian carp meat, 90-110 parts of snakehead fish meat, 4-5 parts of orange peel, 50-80 parts of yellowwine, 10-20 parts of fresh ginger, 2-5 parts of glabrous greenbrier rhizomes, 3-6 parts of honeysuckle flowers, 1-2 parts of fructus forsythiae, 1-2 parts of common andrographis herb, 2-3 parts of radix isatidis, 2-4 parts of indigo naturalis, 2-3 parts of dandelion herb, 1-2 parts of licorice roots, 10-20 parts of pitayas, 15-25 parts of bananas, 10-15 parts of pears, 10-16 parts of watermelons,10-20 parts of wheat flour, 5-8 parts of pueraria starch, 6-9 parts of Chinese yam starch, 3-5 parts of coix seed powder, 5-7 parts of mulberry leaf powder, 4-6 parts of matcha powder, 2-5 parts of mung bean powder, 5-7 parts of selenium-enriched malt flour, 3-6 parts of selenium-enriched bean sprout powder, 4-8 parts of selenium-enriched yeast powder, 3-5 parts of pumpkin powder, 3-7 parts of carrot meal, 4-6 parts of dried spinach powder, 5-20 parts of table salt, 6-22 parts of honey and 6-9 parts of sesame oil. The prepared dried crucian carp and snakehead fish floss is good in effects ofclearing heat and removing toxicity; and besides, meal supplementing powder is added, so that the nutrient value of the dried crucian carp and snakehead fish floss can also increased, and the mouth feel of the dried crucian carp and snakehead fish floss can be improved.