There is no authoritative information stating that chronic pharyngitis is a precursor of cancer, and chronic pharyngitis is generally not cancerous. Early stage of pharyngeal cancer patients have no obvious symptoms, while symptomatic patients show difficulty in swallowing, foreign body sensation and so on. If the condition of patients worsens, they will have symptoms such as anemia and emaciation. Chronic pharyngitis is generally not cancerous, and it is difficult to be cured and easy to recur, so it needs to pay attention to protection in general. Pharyngeal cancer is considered to be due to a variety of factors related to alcohol consumption, smoking, viral infection and so on. In the early stage, patients with pharyngeal cancer usually have no obvious discomfort symptoms, so there is no precursor. Some early stage patients may have symptoms such as blood in snot, hoarseness, foreign body sensation and difficulty in swallowing. If the condition of patients with pharyngeal cancer continues to deteriorate and when the patient’s condition further aggravates, lymph node metastasis or metastasis to other parts of the body such as lungs, liver, kidney and bones will occur. Patients will have symptoms such as anemia, emaciation, failure, sudden hemorrhage, and even life-threatening. There is no obvious precursor of pharyngeal cancer, so it is recommended that patients with chronic pharyngitis should seek medical treatment in time. If there are obvious discomfort such as difficulty in swallowing and foreign body sensation, they should seek medical treatment immediately.