Nosebleeds in summer are mainly caused by rupture of blood vessels in the nasal cavity, which may be caused by environmental stimuli, local lesions in the nasal cavity, hypertension, etc. You should consult a doctor in time to clarify the cause of the disease and carry out appropriate treatment. 1. Stimulation of environmental factors: summer temperature is relatively high, the expansion of small blood vessels in the nasal cavity will cause bleeding, you can reduce exposure to high temperature environment, local cold compresses, pinch the nose compression and other measures to achieve the purpose of hemostasis. 2. Nasal cavity local lesions: the more common parts of nasal cavity bleeding include: Ri’s area, the middle nasal tract, the olfactory fissure area, the lower nasal tract and other places. When the nasal septum deviation or nasal inflammation factors stimulation is easy to cause bleeding in the above areas. It is necessary to combine with nasal endoscopy and other examinations to carefully find the bleeding point, and can be given medication, nasal filling to stop bleeding or electrocoagulation to stop bleeding and other measures. 3. Hypertensive disease: The blood pressure of hypertensive people may fluctuate too much and rise due to the influence of hot weather in summer, and the pressure of blood vessels in the nasal cavity is too large, thus bleeding. Need to actively control blood pressure treatment, can use captopril, nifedipine, etc. for treatment. Nosebleeds also need to check the possibility of blood system diseases, it is recommended to improve the blood routine, coagulation function test. If the bleeding cannot be stopped on its own, it is recommended to go to the hospital in time, and all the above drugs should be used under the guidance of a doctor.