The harm of sneezing and bleeding needs to be decided according to the severity of the disease, as follows: 1. Not serious: If occasional sneezing causes nasal bleeding, it is usually only nasal mucosa erosion and rupture, the amount of bleeding is small, a little finger pressure on the nasal cavity or cotton ball filling can solve the bleeding problem. 2. More serious: If repeated sneezing can lead to frequent nasal bleeding, the amount of bleeding is large and the harm More serious, usually need to treat the primary disease, such as allergic rhinitis patients for anti-allergic treatment, can be given levocetirizine oral, tretinoin nasal spray nasal as well as symptomatic treatment, such as 1% furosemide nasal drops to constrict the nasal blood vessels. If necessary, petroleum jelly gauze is used to fill the nasal cavity to provide pressure to stop bleeding, and if the effect is not good, nasal endoscopic electrocoagulation for nasal bleeding can also be performed.