After hemoptysis is stopped the sludge is drained for a few days, maybe 3 to 5 days if the bleeding is small, or about 7 days if the bleeding is heavy. Hemoptysis is bleeding from the respiratory tract or lungs below the throat and is one of the most common emergencies. Determine hemoptysis after stopping the bruises a few days to drain, need to be based on specific circumstances, such as the cause of hemoptysis, hemoptysis, the amount of hemoptysis, bleeding site, etc., can not be generalized, in general, the bleeding is small patients, may be hemoptysis after stopping the bruises 3 ~ 5 days to drain. However, for patients with more bleeding, it may take about 7 days for the blood to drain. Secondly, due to the different physical condition and treatment effect of each person, there is obvious individual variability in the exact time for the blood to be drained after the hemoptysis is stopped. Hemoptysis can be caused by a variety of reasons, such as bronchial dilatation, chronic bronchitis, pneumonia, tuberculosis and other diseases. Therefore, patients need to go to the hospital in a timely manner, do the relevant examination, to clarify the specific causes of the disease and then actively treat the original disease.