Blood clots in the nose and no bleeding are mostly related to repeated nose digging. When there is discomfort in the nasal cavity such as itching and foreign body sensation, nose digging can cause damage to the mucosa of the nasal cavity and bleeding, but the amount of bleeding is usually not large, so it does not flow out, mostly caused by unconscious nose digging at night. The nasal cavity is examined and blood crusts are found in the mucous membrane of the nasal septum, and the mucous membrane is congested and eroded. Treatment requires oral multivitamins such as vitamin C and B1 to facilitate wound healing, oral antibiotics such as cefprozil to reduce inflammation, and anti-allergy drugs such as levocetirizine for patients with allergies. Only with comprehensive treatment, the wound in the nasal cavity can heal so that there will not be blood clots and no bleeding in the nose.