The burning sensation on the face is considered to be the following diseases: first, dermatitis, which is a local inflammatory reaction caused by Streptococcus haemolyticus infection, usually with a low immunity. It may occur after a long night, or after suffering from serious medical diseases such as diabetes, hypertension, hyperlipidemia, cerebral thrombosis and other diseases; second, solar dermatitis, mainly due to prolonged exposure to outdoor ultraviolet radiation, and the inflammatory allergic reaction; third, skin infection, may be due to the original facial eczema, dermatitis and other diseases, excessive scratching caused by the skin barrier function The destruction of the skin barrier function, resulting in the invasion of bacteria such as Staphylococcus epidermidis infection and caused by inflammatory reactions.