What happens if a patient is inadvertently stung by a hornet without treatment depends on the severity of the hornet sting and the patient’s own healing ability. If the patient’s own healing ability is strong, and the hornet sting is superficial and limited, and does not cause serious local infection, the patient’s own strong resistance can promote faster recovery of the injured tissue even without active debridement and disinfection treatment, which generally does not cause serious local infection and the patient’s prognosis is relatively good. If a patient is stung by a hornet to a more serious degree, the local damage is extensive and the local area is accompanied by acute infection such as redness, swelling, heat and pain, the patient’s own healing ability is not good at this time, in this case, if disinfection and anti-infection treatment is not carried out in a timely manner, with the aggravation of the local infection, it can cause chills, high fever and other systemic symptoms of poisoning, and even endanger the patient’s life.