The invention discloses a fish collagen composition as well as a preparation method and application thereof. The fish collagen composition comprises 45-65 parts of fish 
collagen peptide, 6-15 parts ofmaltodextrin, 10-15 parts of resistant 
dextrin, 5-10 parts of 
calcium aspartate, 1-5 parts of lemon 
powder, 0.1-1 part of acerola cherry 
powder, 5-15 parts of 
xylitol, 0.5-2 parts of 
xanthan gum, 1-2parts of 
anhydrous citric acid, 1-2 parts of lemon essence, and 0.01-0.2 part of 
sucralose. The fish 
collagen peptide is used as a main 
raw material, and the 
calcium aspartate is used as an auxiliarymaterial for complementing collagen and 
calcium, so that 
metabolism of skeleton collagen is promoted, 
chondrocyte is stimulated and actuated to strengthen synthesis of a 
cartilage matrix, bone jointrubbing is reduced, damaged 
articular cartilage is repaired, 
bone density is increased, and 
osteoporosis is prevented. The lemon 
powder and the acerola cherry powder contain massive rich 
vitamin C, sothat proliferation, formation and 
oxidation resistance of the collagen can be promoted; the lemon powder and the acerola cherry powder generate 
synergy effect with the fish 
collagen peptide and the calcium aspartate, so that the 
efficacy of products for beautifying the features is improved, and the effects of 
smoothing skin, enabling the 
skin to be elastic, preventing wrinkles and delaying 
senescence can be achieved.