Early stage nasopharyngeal carcinoma unexplained tinnitus, hearing loss, stuffy ear on one side; unexplained nasal congestion on one side gradually worsened with blood in nasal mucus or backward nasal mucus with blood, or even unilateral nasal bleeding; unexplained scalp numbness or migraine on one side; unexplained painless mass below the earlobe and behind the angle of the lower jaw on one side. Early stage laryngeal cancer unexplained sore throat and painful swallowing, radiating to the heart of the ear; unexplained hoarseness of voice without improvement after more than 2 weeks of conservative treatment, especially in male patients who have been smoking and drinking alcohol for a long time, should be highly suspected of laryngeal cancer or precancerous lesions; unexplained hemoptysis with gradual shortness of breath.