Ventricular tachycardia is a tachycardia consisting of three or more broad, distorted QRS waves originating below the bifurcation of the bundle of Hirschsprung. Ventricular tachycardia occurs mostly in cardiac patients and can have serious consequences and increase the rate of death. Aggressive treatment is needed to immediately stop the onset of ventricular tachycardia. So what are the causes of the appearance of a wide QRS abnormality? The following is a brief explanation. The main causes include 1, mostly seen in organic heart disease, coronary artery disease, cardiomyopathy, heart valve disease and hypertensive heart disease, myocarditis, etc. 2, drug poisoning or drug effects: digitalis, quinidine and antimony poisoning, etc. 3, mechanical stimulation of intracardiac operations, seen in the heart catheterization block, cardiography and cardiac surgery, etc. 4, some patients with ventricular tachycardia without organic heart disease, called idiopathic ventricular tachycardia, such as originating in the right ventricular outflow tract and left ventricular idiopathic ventricular tachycardia, etc., the hemodynamic impact is small. The main symptoms: palpitations, precordial pain, syncope, shock, congestive heart failure in severe cases may be complained of. The hemodynamic changes are mild in those with brief episodes; those with episodes lasting more than 24 hours can have significant hemodynamic changes and even sudden death. Regardless of the classification of tachycardia and the cause of tachycardia, the condition varies from patient to patient with different health conditions. As long as the tachycardia appears at the time of examination, although there is no organic disease, but persistent rapid heartbeat, must go to the professional regular hospital for systematic treatment, so as not to delay the disease, resulting in irreversible consequences.