The invention relates to a powdery scalp environment conditioning agent and a preparation method and applications thereof. The conditioning agent comprises following raw materials in parts by weight:500 parts of black soya beans, 500 parts of fleece-flower root, and 500 parts of glutinous rice. The preparation method comprises following steps: washing glutinous rice by water to obtain glutinous rice water; soaking fleece-flower roots in glutinous rice water, then placing fleece-flower roots in a boiler; adding black soya beans and water, boiling, then drying the product until the water content is 70%; repeating specific steps, baking, and grinding to obtain the conditioning agent. The provided powdery scalp environment conditioning agent is prepared dozens of herbaceous plants, is purelynatural, does not contain any additive, comprises multiple nutrients for the growth of hair, does not damage the hair and scalp, does not have any side effect on human health, has a protective effect,and is capable of effectively conditioning the scalp environment. Furthermore, the conditioning agent is in a powder form, does not contain any water, essence, pigment, thickening agent, or antiseptic, contains natural plants, which are used to replace chemical components, and has a prominent effect.