Nose bleeding during pregnancy is mostly associated with rupture of blood vessels in the nasal mucosa due to various causes. Different treatment methods need to be taken according to different causes. Common causes and treatment methods 1. Pregnancy influence: Due to the large increase of progesterone, the nasal mucosa blood vessels of pregnant women tend to be fragile or angry, which is more likely to lead to nasal dryness, nasal inflammation and thus nosebleeds. At the same time, the blood volume of pregnant women is higher than non-pregnant period, and the human nasal mucosa is richer in blood vessels and the blood vessel wall is thinner, so it is very easy to rupture and cause bleeding. Indoor air circulation and humidity should be maintained, and more vegetables and fruits should be eaten to help reduce the probability of nosebleeds; 2. Pre-pregnancy diseases: diseases such as rhinitis, sinusitis or capillary hemangioma before pregnancy can lead to ruptured nasal mucosal vessels bleeding during pregnancy, avoid random medication during pregnancy to avoid affecting the development of the fetus, you can use saline or physiological seawater for nasal rinsing; 3. Systemic diseases. Nasal bleeding caused by hypertension and blood disorders during pregnancy can be more serious, which also requires examination and attention. Prompt medical attention is needed to diagnose pregnancy complications or blood disorders. Precautions bleeding serious need to promptly seek medical attention to see if there are active bleeding points, and then symptomatic treatment. Pregnant women should avoid excessive stress during pregnancy, eat healthy, drink more water, and reduce bad habits such as smoking and drinking to avoid causing nose bleeds.