There is a burning sensation for half a month after applying the ma ying long, which may be caused by drug stimulation or drug allergy. The Ma Ying Long contains ice chips and musk, if the anal surface of the skin or mucous membrane ulcers, vesicles or have different degrees of inflammation mucous membrane damage, coated with Ma Ying Long, may be stimulated by the drug, causing burning sensation of the local tissues, if only slight pain can be temporarily observed, no need to deal with. But lasted half a month may be more serious drug stimulation, you can switch to other hemorrhoidal ointment, such as Longzhu ointment, anus tai ointment and so on. If it is the burning sensation caused by allergy to Ma Ying Long, stop the drug immediately. Patients need to eat a light diet, prohibit spicy stimulating food, if discomfort, it is recommended to the hospital anorectal department.