Scald dripping is mainly the body fluid exudation caused by the increase of capillary permeability after injury. Scalding is a thermal burn, burn patients generally first rapid changes in body fluid exudation, usually in the post-injury 6 to 12 hours of the fastest rate of body fluid exudation, can last 24 to 36 hours, serious cases can be extended to more than 48 hours. Scald dripping occurs in second-degree burns, especially in shallow second-degree burns. First-degree burns, body fluid exudation is mainly manifested as local tissue edema. Second-degree scald, can be seen in a large number of body fluid exudation, such as “drip”. When the burn area is large, the exudation leads to a significant decrease in circulating blood volume, hemodynamic changes, and then shock occurs. Therefore, in large burns, the period of exudation of body fluids is also called the shock period. Exudation of body fluids is mainly due to increased capillary permeability. Immediately after the burn, the body releases a variety of vasoactive substances, such as histamine, 5-HT, bradykinin, prostaglandins, catecholamines, oxygen free radicals, endothelin, etc., which can cause changes in microcirculation and increased capillary permeability. Scald dripping should be taken seriously, when the area is large, need to be alert to the occurrence of shock, should be sent to the hospital at the same time to do anti-shock treatment.