1, not everyone is suitable for hot compresses. Skin sensory insensitive or abnormal people, such as the elderly, children, diabetes with neuropathy and stroke patients, should not blindly hot compresses. If you need hot compresses, you must pay attention to temperature control to avoid burns. 2, not any situation can be hot compress. People with skin ulcers or skin diseases should avoid hot compresses on the surface of the skin lesions to prevent infection or irritation of the skin disease and aggravate the symptoms. 3, not any disease is suitable for hot compresses. Hot compresses are mainly for cold diseases, so patients with warm diseases should not apply hot compresses. This group of people often manifested as easy to fire, especially fear of heat, or accompanied by bad breath, constipation. 4, hot compress is not the hotter the better. The temperature of the hot compress should not be too high, usually 40 to 50 degrees Celsius can be, hot compress about 20 minutes. If the skin is more delicate parts of the hot compress, the temperature needs to be a little lower.