The causes of dizziness, nausea and shortness of breath have many aspects, and it is necessary to pay attention to the triggers of the onset, accompanying symptoms, and relevant examinations to clarify. 1, many patients are prone to dizziness, nausea, shortness of breath, and fatigue when they are tired and have a bad rest, but the degree of dizziness, nausea, and shortness of breath will not be too heavy, and it belongs to neurological debility. 2, female patients with emotional anxiety and tension will have symptoms of dizziness, nausea, and shortness of breath. Dizziness, nausea and shortness of breath may occur in female patients when they are anxious or nervous, but CT, transcranial Doppler and cardiac examinations will not reveal any positive findings.3. Dizziness, nausea and shortness of breath may be caused by diseases, such as cerebral hypoperfusion, cardiac diseases or pulmonary diseases.