After freezing the wart usually need to apply antibiotic cream to prevent infection (such as mupirocin cream, fusidic acid cream, etc.), and pay attention to daily care. Common warts, commonly known as “wart”, “wart”, after liquid nitrogen freezing local skin blisters easily appear. If the blisters rupture, bacteria can easily attack the open wound of the skin, so you can often apply antibiotic cream, such as mupirocin cream, fusidic acid cream, etc., to prevent secondary bacterial infection. After cryotherapy should avoid water in the wound, if blisters appear, avoid using needles or hands to touch often, in order to prevent blisters rupture caused by secondary infection, diet should be nutritionally balanced, such as consuming lean meat, eggs, vegetables and fruits, etc., to avoid spicy and stimulating food, appropriate exercise to enhance immunity, which will help the skin repair. After freezing the wart patients should also maintain a pleasant mood, which will help the recovery of the condition, it is recommended that the patient to the hospital dermatology, follow the doctor’s instructions for treatment. The above drugs need to be used in accordance with medical advice.