In winter, the nasal cavity of patients are most likely to have nosebleeds, because in winter, the air environment is dry, both indoors and outdoors, especially in the north after the heating of the house, the air is particularly dry, and many people often have nosebleeds. In winter, the patient’s nasal mucosa secretion function decreases, and when combined with dry air, it is especially easy to cause the nasal mucosa to break down. It is recommended that patients must do a good job of moisturizing after the winter, you can spray physiological sea saline inside the nose to play the effect of moisturizing, you can buy air humidifier at home. At the same time, patients should wear a mask when they go out, and eat more fresh vegetables and fruits to replenish vitamins.