The invention discloses a composition containing a bilberry extract. The composition comprises, by weight, 25 parts of the bilberry extract, 20 to 30 parts of citrus bioflavonoids, 20 to 30 parts of taurine, 15 to 20 parts of eyebright, 12 to 18 parts of a chrysanthemum extract, 10 to 15 parts of xanthophyll, 10 to 15 parts of quercetin, 3 to 7 parts of L-acetylcysteine, 2 to 4 parts of L-glutathione, 2 to 3 parts of zeaxanthin, 1 to 1.5 parts of astaxanthin, 1.5 to 2 parts of beta-carotene, 120 to 180 parts of vitamin C, 40 to 65 parts of vitamin E, 5 to 10 parts of vitamin B2, 5 to 10 parts of vitamin B6, 15 to 20 parts of calcium carbonate and L-calcium ascorbate, 8 to 12 parts of zinc sulfate, 0.8 to 1.2 parts of copper gluconate, 0.02 to 0.03 part of chromium picolinate and 0.01 to 0.02 part of chelated selenium. After oral administration of the composition, nyctalopia and eyesight of people can be improved.