Frequent nose picking bleeds because excessive nose picking can easily lead to nasal mucous membrane damage. In addition, the nose itself disease, systemic diseases, etc. can also aggravate the symptoms of nose picking bleeding. It is recommended to go to the hospital for further examination to clarify the cause of the disease. 1. Nasal mucous membrane damage: frequent nose picking can lead to nasal mucous membrane rupture and bleeding. Because the action of picking the nose is easy to damage the mucous membrane of the anterior part of the nasal septum, this area of the mucous membrane is thin, and has a very rich capillary plexus, so it is very easy to cause mucous membrane damage leading to bleeding. Especially when the nasal cavity is dry, picking the nose is more likely to lead to bleeding. 2. Nasal disease itself: for example, chronic rhinitis sinusitis, nasal swelling. These nasal diseases themselves can cause congestion and edema or erosion of the nasal mucosa, prone to nose bleeding symptoms, so these patients often picking the nose is more likely to bleed. 3. Systemic diseases: such as hemophilia, leukemia and other blood system diseases, increased arterial and venous pressure, nutritional disorders or vitamin deficiencies and other diseases, these patients often picking their noses are also more likely to bleed. It is recommended to correct the bad habit of picking the nose, if there is a nosebleed, it is recommended to go to the hospital as soon as possible to the otorhinolaryngology department, under the guidance of the doctor for standardized treatment.