Dizziness, nausea, vomiting and fast heartbeat may be caused by the following diseases, as follows: 1. Diseases of cerebral origin: such as cerebrovascular disease, epilepsy, vestibular peripheral vertigo, etc. can cause patients to experience dizziness, nausea, vomiting, visual rotation and panic, etc. Such diseases need to be examined by electroencephalogram, cranial CT, vestibular function to clarify the cause. 2. Diseases of cardiac origin: arrhythmia, The cause of these diseases needs to be clarified by electrocardiogram, cardiac ultrasound, coronary angiography, etc. 3. Systemic diseases: Phytodysfunction, hypertension, hypoglycemia, anemia, hyperthyroidism, etc. can also lead to dizziness, nausea, vomiting, rapid heartbeat, etc. Therefore, symptoms of dizziness, nausea, vomiting, and rapid heartbeat need to be further clarified by relevant auxiliary examinations to determine the cause.