In life, if the patient has blood in the nasal aspiration, the following aspects should be considered: 1. If the patient has recently caught a cold, the mucosa of the nasopharynx may be obviously congested, and if excessive force is applied to the aspiration, it will easily lead to the rupture of the blood vessels on the surface of the mucosa, resulting in a small amount of bleeding. 2. The patient may have occupational changes in the nasopharynx, often nasopharyngeal fibrovascular tumors or malignant tumors in the nasopharynx. There may also be blood in the nasal aspiration, which requires further examination. Regardless of which of the above causes, it is necessary to actively treat the symptoms in order to improve the patient’s condition. It is recommended to exercise more in life to improve resistance and develop good living habits.