The present invention relates to a fatigue preventing health-care composition. The composition comprises the following raw materials: Chinese wolfberry fruits, red dates, maca, radix puerariae, American ginsengs, L-carnitine, taurine, selenium-enriched yeast and SOD freeze-dried powder. A preparation method of the composition is as follows: firstly the Chinese wolfberry fruits and red dates are subjected to extraction with water, a water extract is concentrated, the concentrated extract is dried, the dried extract is crushed to obtain powder A; then the maca, radix puerariae and American ginsengs are subjected to extraction with ethanol, an alcohol extract is concentrated to obtain an alcohol extract thick paste, medicinal dregs after the alcohol extraction are boiled with water, the water decoction is concentrated, the concentrated water decoction is mixed evenly with the alcohol extract thick paste, the mixture is dried, and the dried mixture is crushed to obtain powder B; and finally, the powder A, the powder B and other raw materials in the formula are mixed evenly to obtain the fatigue preventing health-care composition. The prepared health-care composition can obviously prolong the weight-bearing swimming time of mice, reduces the blood lactic acid level of the mice after exercises, and increases the reservation of hepatic glycogen in the mice. Through population eating trials, the composition can obviously alleviate or improve the fatigues, sore waist and painful legs, sexual dysfunction and other symptoms.