Nasal capillary hemangioma, dry rhinitis, hereditary hemorrhagic capillary dilatation and other diseases are common. 1. Nasal capillary hemangioma: a malformation caused by vascular development disorder or malformation during the process of vascular development, mostly occurring in the front part of nasal septum, the front end of inferior turbinate, external nasal skin, etc., the volume is small, the diameter of which is below 1.5cm, and it is often polypoid with a tip, with a smooth surface or forming ulcers, easy to bleed. 2. Dry rhinitis: when the patient’s nose is stimulated by cold air, sand and dust, the mucous membrane in the nose may be dry and wrinkled, and the blood vessels dilate and puff up tightly against the thin mucous membrane surface, showing the situation of exposed blood vessels. 3. Hereditary hemorrhagic capillary dilatation: it is an autosomal dominant hereditary disease, which is characterized by capillary dilatation damage in many parts of the skin and mucous membranes, and blood vessels inside the nose can be seen to be exposed, which can cause rhinorrhea and hemorrhage in other parts of the body. It is recommended that patients actively seek medical treatment and systematic examination for a clear diagnosis.