Disclosed are natural mask powder for improving skin, and a preparation process thereof. The preparation process includes metering, mixing, washing, draining and drying dahurian angelica roots, commonbletilla tubers, white atractylodes rhizomes, white poria, coix seeds, pearl, mung beans, green tea, licorice roots, dried tangerine peels, red-rooted salvia roots, Changbai Mountain wild ginseng, Chinese angelica roots, lucid ganoderma, Chinese dodder seeds, malaytea scurfpea fruits, Chinese magnoliavine fruits, pseudo-ginseng and cordyceps herbs; smashing the dried raw materials into powder, and steaming the smashed mixed powder at 95-105 DEG C for 25-35 minutes; air-drying the steamed mixed powder at the room temperature, and packaging the air-dried mixed powder according to specificationsto obtain the finished natural mask powder. The finished natural mask powder is added to deionized water with the temperature of 60-70 DEG C, and the mixture is stirred into paste that is spread on the skin surface. The metabolism of the skin is improved, the production of tyrosinase and melanin is inhibited, deep facial spots are effectively eliminated, the face becomes more rosy and smooth, flabby skin and wrinkles are relieved, facial diseases are effectively treated, swelling is relieved, pus and poison are eliminated, and tissue regeneration is promoted.