Patients suffering from corns of mouth can use erythromycin ointment, especially when the local corners of the mouth have broken and erosion, indicating that the corners of the mouth has been secondary to bacterial infection, can use erythromycin ointment for local anti-inflammatory. In addition to the ointment for anti-inflammatory, many patients with stomatitis also have vitamin and trace element deficiencies, especially when the body B vitamin deficiency, it is easy to cause the corner of the mouth cracking and erosion, so also to ensure that the body nutrition balance. In addition, some corneal infections are caused by local herpes virus infections in the corners of the mouth, usually in the early stages of the disease will exist in the corneal blisters, when the local blisters break down will leave a congested, vesicular surface, this should be used in the early stages of antiviral ointment, such as acyclovir ointment. If vesicles and redness appear after the blisters have broken down, erythromycin ointment can be used to reduce inflammation at the same time.