The present invention aims at providing one kind of natural plant-originated antisenility skin care factor for cosmetics preparation. Bamboo leaf general flavone has the beautifying effect of resisting free radical, resisting oxidation, resisting radiation, resisting bacteria, bacteriostasis, promoting proliferation of skin cells, preventing skin from oxidation damage, reducing melanin synthesis and delaying skin senility; and it has special scent,no irritation to skin and no allergic reaction. It may be applied in various cosmetics, such as nourishing agent, sun block skin care agent, anti-wrinkle whitening agent, face cleaning cream, shampoo, bathing cream, etc.