Symptoms of ventricular tachycardia vary depending on the ventricular rate, duration, underlying heart disease and cardiac function. Generally, it can be manifested as low blood pressure, oliguria, shortness of breath, angina pectoris, fainting, etc. In severe cases, it can lead to cardiac arrest and sudden death. 1. Non-sustained ventricular tachycardia: these patients are usually asymptomatic, the duration of the attack is less than 30 seconds, and can be terminated by themselves. 2. Sustained ventricular tachycardia: patients may show low blood pressure, oliguria, shortness of breath, angina pectoris, syncope and other discomforts, and the duration of the attack is more than 30 seconds, which needs to be terminated by drugs or electrical cardioversion. In addition, ventricular tachycardia may become ventricular fibrillation, which can lead to cardiac arrest and sudden death, this situation is critical, and should be timely medical care. Different manifestations of the same disease are treated differently, and should be treated scientifically under the guidance of a doctor.