Patients with sudden dizziness, vomiting, weakness of the limbs are commonly found in the following diseases: 1, Meniere’s syndrome, which occurs in young people aged 30-50 years old, middle-aged people. Sudden onset, dizziness, visual rotation, nausea and fatigue, severe vomiting accompanied by tinnitus, deafness, intermittent or recurrent onset; 2, cervical spondylosis, can be seen in the middle-aged and elderly, people with poor sleep position or long-term improper sitting posture, improper sleep, trauma, incorrect sitting posture or life accidents can be caused by the sudden onset. Patients experience dizziness, nausea and weakness of the limbs, often accompanied by numbness of the fingers or headache; 3, heatstroke, prolonged exposure to high temperatures can cause this disease. Light patients have dizziness, headache, fatigue, thirst and sweating, etc., in severe cases, due to massive dehydration and heat dissipation, the patient performance dizziness, headache and fatigue, but also nausea, vomiting, sweating and high body temperature. In severe cases, postural hypotension or even fainting may occur. 4. Gastrointestinal flu, mainly caused by Coxsackie virus, accompanied by bacterial infection. Patients mainly show nausea, vomiting, abdominal pain and diarrhea and other symptoms, can also be accompanied by dizziness, headache and limb weakness. In short, there are many other diseases with the above symptoms. Therefore, patients should consult a doctor in time when the above situation occurs, so as to find out the cause of the disease and treat it in time.