There are many reasons why there are blood clots or blood inside the nasal mucus, such as sinusitis, dry rhinitis, nasopharyngeal carcinoma, etc. According to different reasons, medication or surgery should be used for reasonable treatment. 1. Sinusitis: mainly caused by bacterial, viral, fungal and other pathogens infection and inflammatory disease of sinus mucosa, which can lead to nasal congestion, runny nose, nosebleed and other phenomena. Nasal glucocorticoid drugs can be used for rational treatment, such as commonly used budesonide, mometasone furoate, etc., but need to pay attention to nosebleeds, bronchospasm and other adverse reactions. 2. Dry rhinitis: due to the dryness of the nasal mucosa, the capillaries of the mucosa are brittle and cracked, when blowing the nose, coughing and sneezing, it can cause rhinorrhea. Treatment can be done by rinsing the nasal cavity with saline, nasal drops with compound peppermint drops, liquid paraffin, oral vitamins and so on. 3. Nasopharyngeal carcinoma: It is a malignant tumor occurring in the posterior wall of nasopharyngeal roof and pharyngeal crypt, which can lead to symptoms such as bloody nasal discharge, nasal congestion, tinnitus, hearing loss and other discomforts. It can be treated with chemical drugs appropriately, such as paclitaxel and gemcitabine, which are commonly used, and can play the role of killing cancer cells and stopping cancer cell proliferation. Therefore, when the phenomenon of blood in the nose occurs, it is necessary to go to the hospital in time to clarify the cause of the disease and standardize the treatment.