Cardiac contrast allergy requires an appropriate treatment plan depending on the severity of the allergy. If the allergic symptoms are severe, such as shortness of breath, chest tightness, shortness of breath, drop in blood pressure, pallor, and decrease in urine output, subcutaneous injection of epinephrine, as well as intramuscular injection of paracetamol and dexamethasone can be considered. If it is only a manifestation of skin urticaria, intramuscular paracetamol or Finagan can be injected. If the allergy is mild, it can also be treated with oral anti-allergy medication, such as loratadine or cetirizine capsules under medical supervision. Alternative methods of cardiac examination that do not require contrast media can be chosen, and try to avoid using the same contrast media again.