There are many reasons for nausea, dizziness and weakness: 1, if the patient appears when taking transportation, it may be a reaction to motion sickness or seasickness.2, sometimes the patient’s cerebral vascular spasm and insufficient cerebral blood supply may cause the patient to experience dizziness, nausea and weakness.3, Vestibular disorders can also cause the patient to experience severe dizziness, nausea, vomiting, and weakness, such as Ménière’s disease, vestibular neuronitis, labyrinthitis.4. If the blood pressure is not properly controlled, the blood pressure is too low or too high, all kinds of cardiac diseases, such as atrial fibrillation, chronic cardiac insufficiency, more ventricular premature beats of the heart, anemia or colds, fever, hypoglycemia, and other diseases, can cause patients to experience dizziness, nausea, and weakness symptoms. The cause of the patient’s specific disease needs to visit the hospital, through the doctor’s detailed medical history, physical examination, and improve the examination to be able to clarify.