The 26-year-old Xiao Zhao had blood in his nose for 10 days, and after the department did a preliminary examination for him, it was suggested to do a nasal endoscopy again. Zhao disagreed, thinking that the hospital was making a big deal out of it, and the doctor explained again and again before he reluctantly underwent the examination. During the examination, the doctor saw that he had a purple-red growth in his nasopharynx, which was very brittle and bled upon contact. The doctor removed a piece of tissue and the pathological examination results showed that Xiao Zhao was suffering from nasopharyngeal cancer. Fortunately, Zhao recovered quickly from the treatment after timely detection. The misdiagnosis rate of nasopharyngeal cancer is very high, and only about 10% of the cases are diagnosed at an early stage. In the past 30 years, although advanced diagnostic instruments such as CTp MRI have been introduced into the clinic, the diagnosis of nasopharyngeal cancer is easily delayed due to the absence of characteristic symptoms and hidden location of lesions. The misdiagnosis rate of the disease is reported to be 48.2%-82.4%. Bleeding is a common early symptom of the disease, which is manifested as blood in the sputum after nasal aspiration or blood in the snot when blowing the nose, and this condition is often misdiagnosed as epistaxis. Some patients with nasopharyngeal carcinoma may develop fluid in the ear drum, which can be easily treated as otitis media. Once a patient has these symptoms, doctors should be alert and do a nasal endoscopy for the patient to avoid missing the diagnosis. In general, anyone who has retracted blood snot, those who have secretory otitis media on one side that does not heal for more than three weeks, and those who have lymph nodes above the neck should think of the possibility of nasopharyngeal cancer and need to do nasopharyngeal examination and, if necessary, pathological examination to clarify the diagnosis. There are more reasons for nasal bleeding, and when we encounter such patients, we should do a routine blood test in addition to nasal endoscopy. Not long ago, an 18-year-old high school student came to see a doctor and the routine blood test revealed that the patient’s platelets were only 4000 (normal 100,000~200,000) and white blood cells were only 2000 (normal 5000~10000). After the hematology examination, the young man was suffering from aplastic anemia.