The invention discloses a moisturizing lotion containing plant components, and a preparation method of the moisturizing lotion. The moisturizing lotion is prepared from the following raw materials: aflavescent sophora root extract, a tea leaf extract, an aloe extract, capryloyl glycine, bisabolol, ceramide, vitamin E, lanolin, squalane, glyceryl stearate, cetyl-stearyl alcohol, xanthan gum, carbomer, glycerin, panthenol, trehalose, allantoin, methylparaben, triethanolamine, essence and pure water. The moisturizing lotion disclosed by the invention utilizes the synergistic effect of the flavescent sophora root extract, the tea leaf extract and the aloe extract which are pure natural components containing plant herbal medicines, so that pathogenic microorganisms such as propionibacterium acnes are effectively inhibited, and an inflammatory response is relieved; meanwhile, the effects of moisturizing and repairing skin barrier are achieved; and furthermore, the moisturizing lotion is comprehensive in effects and better in curative effect, is mild and comfortable, is suitable for long-term use while being in line with the laws and regulations of China, and is simple in production process, good in compatibility of all the components, free from chemical synthetic substance allergens, low in raw material cost and remarkable in effects of removing acnes, diminishing inflammation and resisting comedones.