The common causes of dizziness, nausea and vomiting are the following: First, motion sickness, mostly in car, boat, airplane or amusement park similar roller coaster and other projects, dizziness, nausea, vomiting and other symptoms during play, mostly with a similar medical history. It can improve on its own after taking oral motion sickness medication or resting, and will not leave sequelae, but is prone to recurrence. Secondly, inner ear disease or vestibular disease, dizziness, vertigo, visual rotation, nausea, vomiting, and unstable walking can occur, commonly due to vestibular neuronitis, Meniere’s disease, benign episodic positional vertigo, vestibular migraine, and other diseases. Vestibular function tests can help in diagnosis or differential diagnosis. Third, posterior circulation ischemia, in addition to dizziness, nausea and vomiting, there may be abnormal sensation of the face or limbs, or paralysis of the facial muscles and paralysis of the contralateral limbs, and some patients may also have symptoms such as unsteadiness in walking and choking on drinking water, and cranial magnetic resonance examination can clarify the diagnosis.