Neck pain on swallowing is usually associated with acute tonsillitis, acute or subacute thyroiditis, and cauda equina syndrome. 1. Acute tonsillitis: an infectious disease of the upper respiratory tract caused by bacterial and viral infections, with clinical manifestations such as throat enlargement, edema, and severe sore throat, accompanied by headache and fever, which may lead to neck pain when swallowing saliva. 2. Acute or subacute thyroiditis: generally due to low immunity, viral and bacterial infections caused by inflammatory changes in the clinical manifestations of fever, pharyngeal discomfort, dysphagia, neck pressure and other phenomena, may cause neck pain when swallowing saliva. 3. Stromal overgrowth syndrome: caused by overgrowth of the stroma, abnormal shape and stimulation of the peripheral vascular nerves, clinical symptoms include pharyngeal pain, foreign body sensation and obstruction, accompanied by earache, tinnitus, dizziness, headache and other symptoms, which may cause pain when swallowing saliva in the neck. If the phenomenon of neck pain when swallowing saliva, it is recommended to go to the regular hospital in a timely manner, to clarify the cause of the disease, and give appropriate treatment.