Due to the cold weather, people have been using various heating devices at home for heating, but do not know that improper heating, these heating appliances and skin “intimate contact” can cause skin disease. Recently, more than a dozen cases of patients with heat-irritated erythema caused by “close contact” with heating appliances have been seen in succession. Heater for a long time on the local skin baking, electric hot water bags and the skin of long-term “close contact”, and some elderly people like to use high-temperature electric blankets, resulting in a long period of repeated thermal stimulation and local skin capillary dilation of lesions. The less severe ones will show temporary reticular erythema, if long-term or repeated exposure to heat sources, the erythema will gradually deepen to blue-purple, and pigmentation, sometimes visible epidermal atrophy, excessive damage will also appear blisters. Generally speaking, the erythema will subside on its own after the lighter degree is no longer exposed to heat source and some emollient cream is applied, but if there is atrophy-like change, the recovery time is relatively longer and the pigmentation will subside more slowly. Reminder: electric blanket as far as possible to open the temperature of low gear is appropriate. Electric hot water bags are best not to be in close contact with the skin.