The invention discloses a nutrient composition and application thereof in preparation of medicines for treating aplastic anemia. The nutrient composition is prepared from the following components according to ratios: lysine, methionine, phenylalanine, threonine, tryptophan, arginine, histidine, glycine, aspartic acid, leucine, isoleucine, valine, serine, glutamine, taurine, orotic acid, nucleotide, vitamin A, vitamin D, vitamin B2, vitamin B6, vitamin B12, niacin, folic acid, vitamin C, iron, zinc, manganese, copper, selenium, chromium, potassium, calcium, magnesium, inositol and granulesten. Aplastic anemia body can be comprehensively repaired, so that an effect of treating aplastic anemia is achieved.