Children with 3-4 nosebleeds a month and often picking their noses, living in a dry environment and other physiological factors, but also consider acute rhinitis, nasal septum deviation and so on. 1. Physiological factors: frequent nose picking, dry living environment, lack of body water, etc. can be caused by children 3-4 times a month nosebleeds. 2. Acute rhinitis: rhinitis is related to pathogen infection and nutritional deficiency. Patients can be due to pathogen stimulation of the nasal mucosa and lead to children 3~4 times a month nosebleed, but also easily accompanied by nasal itching, nasal foreign body sensation, nasal congestion, sneezing, flowing watery nasal discharge and other symptoms. 3. Deviated nasal septum: the disease is related to local developmental abnormalities, trauma, heredity and so on, easy to cause nasal congestion, headache, nosebleed and other symptoms. When a child suffers from deviated septum, the phenomenon of nosebleed can occur 3~4 times a month. There are many reasons for children to have 3-4 nosebleeds a month, such as nasal foreign bodies, thrombocytopenic purpura, leukemia, hemangioma, etc. Parents are advised to take their children to the doctor for examination. Parents are advised to take their children to the doctor for examination in order to clarify the cause of the disease and then follow the doctor’s instructions.