How long it takes to stop hemoptysis in pneumonia is related to the specific condition, and there is a big difference between individuals; hemoptysis may be transient in some patients, and it can be controlled within 1~2 days after anti-infective and symptomatic treatments; however, sometimes it takes several days, and in severe cases with hemoptysis, it is necessary to give the treatment of bronchial artery embolization in order to get control. 1.1~2 days can be controlled, pneumonia may lead to a small amount of hemoptysis, after active use of antibiotic anti-infection treatment and cough and other symptomatic treatment, hemoptysis can be controlled in 1~2 days. 2. It takes several days to control the situation: pneumonia combined with hemoptysis is more serious, may be relatively slow to recover, need to actively anti-infective treatment, and even need to use drugs to stop bleeding, such as white snake venom hemagglutinin, through the above treatments, with the reduction of the infection, the condition may be gradually controlled. 3. Critical condition: some patients with hemoptysis even need to use bronchial artery embolization and other related treatments to deal with hemoptysis, or else the hemoptysis may lead to asphyxiation and life-threatening, generally hemoptysis symptoms can be improved after the operation. Patients with hemoptysis in pneumonia are advised to consult a physician for prompt treatment. The above medications should be used under the guidance of a physician.