If the nose bleeds when touched, the most common cause is due to dryness of the nasal mucosa or superficial blood vessels in the nasal mucosa, and the mucosa ruptures when the nose is touched, causing the bleeding condition. If this is the case, you can use some drugs to lubricate the nasal mucosa, such as compound menthol nasal drops, two drops once, three times a day. You can also use some medication to rinse the nasal cavity, such as physiological sea saline or buy a nasal rinse and use saline to rinse the nasal cavity. In addition, if the nasal cavity is always bleeding, a series of further tests should be done, such as a routine blood test to see if there are abnormal platelets and a coagulation test to see if there are abnormalities in the coagulation function. In some cases, a nasal endoscopy is needed to see if there is a mass in the nasal cavity that causes bleeding, and a sinus CT test to see if there is a mass in the sinus cavity that causes nasal bleeding, etc.