The invention belongs to the technical field of cosmetics, and in particular relates to an external purely-natural skincare product. The external purely-natural skincare product is prepared form the following components: 30-55 g of flaxseed extract, 1-5 g of sodium dodecyl sulphate, 1-5 g of OP emulsifier, 5-10 g of glycerine, 1-2 g of sodium citrate, 3-5 g of glycerin monostearate, 1-5 g of liquid paraffin, 3-5 g of albolene, 5-8 g of octadecanol, 1-3 g of wool fat, and 1-2 g of paraffin. A preparation method comprises the following steps of: a, mixing flaxseed extract, sodium dodecyl sulphate, an OP emulsifier, glycerine and sodium citrate, heating to 80-85 DEG C in water bath, uniformly stirring, and keeping for 20 minutes to obtain a water-phase mixed solution; b, mixing glycerin monostearate, liquid paraffin, albolene, octadecanol, wool fat and paraffin, heating to 80-85 DEG C in water bath, uniformly stirring, and keeping for 20 minutes to obtain an oil-phase mixed solution; and c, adding the water phase in the oil phase, and stirring to condense. The external purely-natural skincare product takes the flaxseed extract prepared from the purely-natural raw material of flaxseeds as a main material, and has the effects of maintaining and moistening the skin.