The invention provides a fine line-weakening and moisturizing aqueous lotion and a preparation method thereof. The fine line-weakening and moisturizing aqueous lotion comprises the following substances: shea butter, jojoba oil, olive oil, rice oil, polyoxyethylene laureth-4, an olive emulsifier, distilled water, a pansy extract, a sakura extract, a kudzu vine root extract, a polygonatum odoratum extract, a camellia extract, glycerin, sodium alginate, sodium carboxymethylcellulose, anionic guar gum, squalane, silicone oil, ethylparaben, an ethanol solution with the concentration of 75% and an essence. Compared with the prior art, the fine line-weakening and moisturizing aqueous lotion prepared by the preparation method provided by the invention is mild in nature and high in security, uses active substances in natural plants to improve skin permeability so as to achieve the mild moisturizing effect, can supplement nutrition and moisture needed by skin to prevent moisture shortage of the skin so as to achieve the moisturizing effect, can resist bacteria, aging and oxidation, makes the skin fine and shiny and improves the skin elasticity.