The invention provides health-care food for beautifying and brightening hair of a dog, belonging to the field of animal health-care products. The health-care food formula comprises the following components by weight based on 1kg: 10-30g of deep sea fish oil, 10-30g of linseed oil, 5-20g of poppyseed oil, 10-30g of perilla oil, 10-30g of grape seed oil, 10-30g of lecithin, 5-20g of chelate iron, 1-10g of chelate manganese, 5-20g of chelate zinc, 1-5g of chelate copper, 0.05-0.2g of yeast selenium, 150-250g of methionine, 50-150g of lysine, 1-4g of vitamin E, 0.05-0.2g of vitamin D, 0.5-2g of vitamin A, 0.05-0.2g of vitamin B1, 0.1-0.4g of vitamin B2, 0.05-0.2g of vitamin B6, 0.05-0.4g of vitamin B12, 0.05-0.2g of biotin, 0.1-0.4g of nicotinic acid, 1-5g of bacillus, 1-5g of yeast, 120-180gof chicken liver powder, 50-80g of Rosmarinus officinalis and the balance of yeast powder. The components are made into a tablet with the specification of 0.7-0.9g according to a regular tabletting process, and the water content is less than 10%. The health-care food provided by the invention has the advantages of high titer and strong stability and is capable of improving the fur health of the dog, protecting hair follicles and hair shafts against damage, enabling the hair to be smooth and soft, reducing hair slip, promoting regeneration of furs, improving immunity comprehensively and ensuring the dog in a healthy and vital state.