Hemoptysis, a common emergency in internal medicine, has a complex and variable etiology, and in serious cases threatens the life of the patient. If it is urgent, the symptoms should be treated and the bleeding should be stopped first. However, treatment for the cause should not be neglected. Hemoptysis is especially common in early spring. If you pay attention to prevention, you can minimize the factors that trigger hemoptysis. Patients with respiratory diseases should pay attention to protection in the fall and winter. What are the aspects of prevention of hemoptysis with skin and mucous membrane bleeding? 1. Prevention of colds: When going out, increase clothes according to weather changes to prevent cold and flu. 2, pay attention to diet: diet rich in vitamin food is preferred. 3.Manage the air: Ventilate the room frequently and keep the appropriate temperature (generally 18-25℃) and humidity (generally 40%-70%). 4.Exercise: moderate physical exercise and respiratory function exercise should be carried out. 5, prepare emergency medicine: the family should prepare a small medicine box, especially to prepare enough cough medicine, such as the treatment of dry cough mainly spraying tovirin (cough Bichin) tablets and syrup; to suppress cough mainly can be healed syrup; to suppress cough phlegm mainly brown amine combination, etc.. The family must have drugs to stop bleeding such as Yunnan Baiyao, sedative drugs such as Valium, etc. Note that the expired drugs in the small medicine box should be replaced in a timely manner. 6, quit smoking, limit alcohol: patients suffering from respiratory diseases, must quit smoking, limit alcohol to reduce the occurrence of hemoptysis triggers. 7, the mood is smooth: Chinese medicine, emotional changes and disease have a certain relationship, such as “happy sad”, “worry hurt the lungs”. Like in “Dream of the Red Chamber”, Lin Daiyu, who suffered from tuberculosis, was usually overly worried and wept at flowers, and died of hemoptysis. Therefore, the prevention of hemoptysis should also pay attention to the cultivation of the body and sex.