Tacalcitol ointment has the effect of inhibiting the proliferation of epidermal cells and inducing the differentiation of epidermal cells, the specific use of medication as prescribed by the doctor. Tacalcitol ointment has an inhibitory effect on the proliferation of epidermal cells and an inducing effect on the differentiation of epidermal cells, and is suitable for the treatment of psoriasis of the common type (commonly known as psoriasis). The drug should be contraindicated in patients with a history of hypersensitivity to the components of the product, should not be used on the cornea and conjunctiva of the eye, and should be used with caution in pregnant women and women who may become pregnant. The main adverse reactions that may occur after the use of the drug are itching, redness, irritation, slight pain, elevation of gammaglutaminase and gammaglutaminase. Specific use of the drug should be under the guidance of a specialist, and should not be used without authorization.