The invention relates to a mild nursing hair oil treatment and care composition containing no silicone oil and a preparation method of the mild nursing hair oil treatment and care composition. The hair care composition is prepared from the following components in percentage by weight: 2-7% of a cation conditioner, 1-4% of an emulsifier, 2-10% of higher aliphatic alcohol, 1-10% of non-silicone oil-type oil or a derivative thereof, 0.1-8% of an additive, and the balance of water, wherein the cation conditioner is composed of behentrimonium chloride, oilseed rape oleamidopropyl dimethylamine, aspartic acid and polyester-11. According to the hair care composition, no silicone oil is added, so that the defects that after silicone oil products are used for a long term, the conditioning property and the smoothness of hair are reduced, and the hair is dry, bifurcate, broken and free of luster are overcome, the hair care composition achieves the effects of moistening and caring hair in the real sense, preserves moisture and provides nutrition from the deep position of the hair, obviously improves the combing property of the wet hair, the combing property of the dry hair, the limpness of the wet hair, and the limpness of the dry hair, and obviously improves the tenacity, the elasticity and the luster of the hair.