Tretinoin acetate is a moderately potent glucocorticoid with anti-inflammatory, antipruritic, and vasoconstrictive effects, as well as an anti-sodium retention effect. The strongest of these effects is the anti-inflammatory effect, and the mechanism of action is a moderately potent glucocorticoid that provides a longer, longer-lasting anti-inflammatory effect on skin diseases. It can be used for the treatment of bronchial asthma, local injection into joints for various joint and bone diseases, and also directly injected into the skin lesions of dermatological diseases to gradually reach the skin to play an anti-inflammatory role. The topical application can be applied ointment, cream and eye drops applied to the affected area, but also oral preparations, oral preparations are usually 3-4 times a day, an initial dose of 4 mg. tretinoin acetate application process must pay attention to the following matters: local injection of the corresponding contraindications, patients with hypertension, heart disease, diabetes, osteoporosis, glaucoma, hepatic insufficiency of the drug caution or even prohibited. Triamcinolone acetonide injection must be shaken well before use so that the drug becomes a suspension and should not be injected intravenously. Local injection should not be too superficial, and the total amount of medication used each time should not be too much. It is usually used topically for the treatment of dermatological diseases, and it is recommended that the duration of use should not exceed two weeks, because long-term use can lead to drug resistance, cause local skin hardening and pigmentation, and should not be used long-term by pregnant women.