Allergy to plaster glue on the skin is caused by contact dermatitis, which is a metamorphic reaction caused by skin contact with allergenic substances, and the methods of treatment include general treatment, application of medication, oral medication and so on. 1. General treatment: need to remove the plaster as soon as possible, can be soaked in warm water, and then gently tear off and clean, avoid excessive force, resulting in skin breakage. Ice packs can be applied to the itchy area to relieve the itching symptoms. 2. Apply medication: Afterwards, you can apply medication to the allergic area to relieve it, commonly used medications include glycerite lotion, compound dexamethasone acetate cream, etc. If the skin breaks down and becomes infected, you can apply medication to it. If the skin breaks down and becomes infected, apply antibiotic drugs such as fusidic acid cream. 3. Oral medication: Oral antihistamines can be taken for treatment, such as cetirizine hydrochloride, diclofenac tadalafil and so on. Vitamin C tablets can also be taken orally. Patients with contact dermatitis should consult a doctor in time, actively cooperate with the doctor’s medication, and avoid self-medication.