The causes of sudden dizziness, vomiting and cold sweat are as follows: a. Clinically, it can be seen in peripheral vertigo Meniere’s syndrome attacks. Patients with vestibular labyrinth edema caused by anxiety, fire or cold, appearing severe dizziness and episodes of visual rotation, accompanied by nausea, vomiting, cold sweat, panic, tinnitus and ear congestion, etc. Patients can be given vestibular inhibitors, together with drugs to reduce vestibular labyrinth edema. Second, sudden dizziness, vomiting and cold sweat are clinically seen in benign positional vertigo, which occurs mostly when the patient turns over in bed. Due to the dislodging and irritation of otoliths, severe dizziness occurs, which lasts for a short time, and dizzy patients will have nausea, vomiting, sweating and panic. Third, sudden dizziness, vomiting and cold sweat are clinically seen in some cardiogenic premature beats, patients appear dizzy and do not have visual rotation, premature heart beats affect blood supply to the brain, patients appear nausea, vomiting, cold sweat, panic and palpitations, etc.