The invention relates to a natural additive-free camellia moisturizer, which is characterized by being prepared from the following components in percentage by weight: 7.0 to 70.0 percent of A-phase component, 20.0 to 90.0 percent of B-phase component and 0.8 to 15 percent of C-phase component. A preparation method of the moisturizer comprises the following steps: a, adding the A-phase component into an emulsification pot, and uniformly agitating, mixing and dissolving; b, adding the B-phase component into an oil-phase material making pot, and uniformly agitating, mixing and dissolving; c, pumping the B-phase component obtained in the step b into the emulsification pot in the step a, uniformly agitating, pre-emulsifying, afterwards, homogenizing, carrying out heat-preservation agitation, defoaming in a vacuum manner, and lowering a temperature; d, when the temperature is lowered to 45 DEG C, adding the C-phase component, uniformly agitating, and cooling to a normal temperature; e, detecting whether a product is qualified, and discharging. The natural additive-free camellia moisturizer has the advantage that the safety defect, which is easily caused, of irritating skin as unsafe chemicals of mineral oil, silicon oil essence, a pigment, alcohol, a preservative and the like are used by a common moisturizer on the market is overcome.