Tongue tremor refers to the involuntary trembling of the tongue in a patient at rest. It appears as a slow rhythmic tremor, with 4 to 6 tremors per second, with variable amplitude, and intensifies with mental stress. Many patients also have postural tremors of 5 to 8 times per second. The following diseases are causes of tongue tremor: 1, Parkinson’s Parkinson’s disease (Parkinsons disease), also known as tremor paralysis, Parkinson’s disease or Parkinson’s disease, mostly after the age of 60 years onset. The main manifestations are slow movements, tremors in the hands and feet or other parts of the body, loss of flexibility and stiffness. The earliest systematic description of the disease was by the British internist James M. Parkinson, who at that time did not know into which category the disease should be classified and called the disease tremor paralysis. Parkinson’s disease is the fourth most common neurodegenerative disease in the elderly, affecting 1% of people aged 65 years and 0.4% of people aged 40 years. The disease can also develop in childhood or adolescence. 50% to 80% of cases have an insidious onset, and the first symptom is usually a 4-8 Hz resting pill-twisting tremor in one side of the hand. Speech impairment is a common symptom in patients with Parkinson’s disease. 2, idiopathic tremor (ET), also known as familial or benign idiopathic tremor, is a common clinical movement disorder that is inherited in an autosomal dominant manner, with postural or motor tremor as the only manifestation, and progresses slowly or does not progress for a long time. Age is currently considered to be an important risk factor for ET, with prevalence increasing with age. The onset of the disease is slow. It can develop at any age, but mostly starts in adults, and some literature reports that it is slightly more common in men than in women. 3, linguopharyngeal nerve injury The linguopharyngeal nerve is a mixed nerve, containing motor and sensory fibers. It passes through the posterior cranial fossa after exiting the skull at the jugular foramen and reaches the lateral wall of the pharynx between the internal and external carotid arteries. Its sensory fibers are the sensory afferent nerves of the linguopharynx, its motor branch is responsible for the function of lifting the soft palate, and its parasympathetic fibers govern the secretion of the parotid gland. The linguopharyngeal nerve belongs to the posterior group of cerebral nerves, which is relatively unlikely to be damaged by trauma, mostly due to the fracture line to the jugular foramen, but lesions in the jugular foramen area of the posterior cranial fossa are very likely to cause damage to the linguopharyngeal nerve. Damage and injury to the linguopharyngeal nerve is often associated with the involvement of the posterior group of cerebral nerves, and injury to the linguopharyngeal nerve alone is extremely rare. The manifestation of the damage is the reduction or loss of taste sensation in the posterior third of the affected tongue, the reduction or loss of general sensation in the upper part of the pharynx, and the prolapse of the soft palate. Most of them are treated conservatively.