Composition for remarkably improving anti-fatigue function, and preparation method and application thereof

The invention discloses a composition for remarkably improving the anti-fatigue function, and a preparation method and an application thereof. The composition comprises, by weight, 24-48 parts of a Haematococcus pluvialis solid dispersion, 900-2500 parts of Lepidium meyenii Walp, 100-600 parts of taurine and 140-320 parts of acai berry powder, wherein the mass percentage content of astaxanthin in the Haematococcus pluvialis solid dispersion is 2.0-3.0%, the Lepidium meyenii Walp undergoes heat refluxing extraction by using ethanol to prepare extract containing 0.02-0.05% by mass of macamides and 5-9% by mass of polysaccharides, and the acai berry powder is prepared through pulping, filtering for residual removal, and spray drying of fresh acai berries. A test result shows that the composition can remarkably prolong the load swimming time of load swimming mice, obviously improve the liver starch level of the mice and remarkably reduce the area under the blood lactic acid curve and the serum urea nitrogen conte