Euthyroxine ointment, also called hydrocortisone butyrate cream, belongs to the glucocorticoid class, which is classified into four classes according to the order of the strength of the action of topical glucocorticoids, i.e. the strength of action is divided into weak, medium, strong and super strong classes. Hydrocortisone butyrate cream belongs to the medium strength drug, so it can be considered to belong to the second grade. Hydrocortisone butyrate cream is usually used for the treatment of allergic dermatitis, seborrheic dermatitis, allergic eczema, etc. It has anti-inflammatory, anti-allergic and antipruritic effects when used topically. However, long-term use also has certain side effects, such as skin atrophy, capillary dilation, pigmentation or allergy. Therefore, when patients use it, they need to determine the dosage under the guidance of a doctor, and self-medication is not recommended to avoid side effects. When using hydrocortisone butyrate cream, patients should be careful to avoid skin breakouts and mucous membrane areas, and if contact occurs, rinse with water immediately. Patients should also be aware that if burning sensation, redness and swelling occur at the site of application, it is recommended to stop the medication immediately, rinse the medication and seek medical treatment promptly.