Brittle blood vessels means that the blood vessels are fragile and easy to bleed. Normally, attention should be paid to the prevention of blood vessel rupture and bleeding, such as avoiding nose collision, paying attention to the habits of life, saline rinsing of the nasal cavity and so on to protect the nose. 1. Avoid nose collision: when children’s nose blood vessels are fragile, accidental collision during play or fight will easily cause blood vessel rupture and bleeding, so we should try to avoid children to do dangerous actions. 2. Pay attention to living habits: usually pay attention to reasonable and balanced living habits, such as light diet, pay attention to rest, avoid eating spicy and stimulating food, do not use your hands to dig the nostrils violently and so on, leading to bleeding of the nasal mucosa. 3. Saline rinse nasal cavity: In addition, when encountering cold air or dry air, it will cause damage to the nasal mucosa of the nasal cavity, the blood vessels are fragile and easy to bleed, you can use saline to rinse the nasal cavity, to keep the nasal cavity moist and clean, to avoid the occurrence of bleeding. In summary, the child’s nose blood vessels are fragile, need to do to prevent bleeding and other dangerous situations. In case of discomfort such as breathlessness, it is recommended to go to the hospital to consult a doctor.