The invention discloses rhizoma curcumae longae repair moisturizing scalp essence and a preparation method thereof. The rhizoma curcumae longae repair moisturizing scalp essence is prepared from the following components, in percentage by mass: 10% of radix polygoni multiflori extract, 10% of ginger root extract, 0.5% of panthenol, 0.3% of 1,3-bis(hydroxymethyl)-5,5-dimethylimidazolidine-2,4-dione,0.2% of polysorbate-20, 0.1% of dipotassium glycyrrhizinate, 0.1% of essence and the balance of deionized water. The rhizoma curcumae longae repair moisturizing scalp essence is simplified in formula, simple in preparation method and convenient to use and does not need to wash with water; anti-bacterial and anti-oxidation functions are achieved through the radix polygoni multiflori extract, the scalp is repaired, sterilization and itching relieving are achieved, dandruff is reduced, meanwhile the ginger root extract can diminish inflammation and sterilize, remove the dandruff and relieve itching, inflammation diminishing and allergy resistance are achieved through dipotassium glycyrrhizinate, the scalp is nourished by adding panthenol, the skin feeling is mild and comfortable, and the essence has a wide application range.