The medulla oblongata, as a part of the brainstem, is at the lowermost part of the brainstem, with many important nuclei as well as nerve fibers, and many clinical symptoms appear after infarction, such as dizziness, hoarseness, and pain on the side ipsilateral to the lesion. Clinical symptoms of medullary infarction manifest as dorsolateral medullary syndrome, which can be clinically manifested as vertigo, nausea, vomiting and nystagmus, which is a manifestation of damage to the vestibular nerve nuclei. Patients may present with hoarseness, dysphagia, and choking on drinking water, which represents damage to the nucleus of the suspected glossopharyngeal vagus nerve. Patients may have crossed sensory deficits, i.e., decreased or absent facial pain and temperature sensation on the side ipsilateral to the lesion, decreased or absent migraine pain and temperature sensation on the side contralateral to the lesion, and Horner’s syndrome on the side ipsilateral to the lesion, which is caused by damage to the downward fibers of the sympathetic nerves. It is recommended that patients with medullary infarction should seek timely medical treatment and take effective treatment under the guidance of doctors.