Dizziness when eating is mainly due to the following aspects: First, after eating, a large amount of blood flows into the digestive tract to aid in digestion and absorption, resulting in dizziness due to insufficient blood and oxygen supply to the brain, mostly in patients with a weak constitution or anemia, commonly known as food sleepiness. After rest or complete digestion of food, the symptoms can be relieved and disappear. Patients are advised to exercise more and enhance their physical fitness, and if necessary, it is recommended to go to the hospital for consultation. Second, cervical spondylosis, mainly caused by prolonged head down, in addition to dizziness, can be accompanied by discomfort in the back of the neck, shoulder soreness, numbness of the upper limbs, it is recommended to perform cervical spine front and side double oblique film, cervical magnetic resonance examination, clear the cause, symptomatic treatment. Third, eating certain foods such as all alcohol, beverages, coffee, yogurt, sauerkraut, MSG, and sweeteners can induce vestibular migraine with dizziness and vertigo lasting from five minutes to seventy-two hours. Fourthly, diabetic patients should be alert to hyperglycemia, hyperosmolarity, ketoacidosis and other comorbidities when eating. If dizziness is accompanied by headache, limb weakness, sensory impairment, choking and coughing with water, they should be alert to the possibility of cerebrovascular disease, and it is recommended to seek immediate medical attention.