The invention provides a preparing method for an acne-removing facial cleanser. The preparing method comprises the following steps that traditional Chinese medicine components are mixed according to proportions and then added into a reaction kettle, water is then added, the temperature is increased to 70 DEG C, the intensity of pressure in the reaction kettle is 2.6 times of standard atmospheric pressure, stirring is carried out constantly, and heat preservation is carried out for 2.5 h; collected medicine liquid is concentrated to 150 parts; glycerinum, zinc pyrithione, guar gum hydroxypropyltrimonium chloride, quaternary ammonium salt, alkyl polyglucoside, vitamin E, plant ash, nanosilicon dioxide powder, water bamboo juice, mulberry juice, aloe juice and orange juice are added, mixed evenly, put in a sealed container to be heated to 65 DEG C and constantly stirred for 20 min; citric acid is added, and pH is regulated to 6.2; then rosemary extract, grape seed extract, dandelion extract, nightshade extract, sweet wormwood extract, metaplexis seed extract and China redbud extract are added in sequence and stirred for 10 min or longer in the normal pressure environment at the temperature of 45 DEG C, and the acne-removing facial cleanser is obtained. The process is simple, and production cost is low.