Different types of paroxysmal tachycardia have different levels of risk severity. In general, atrial paroxysmal tachycardia is relatively less dangerous, while ventricular paroxysmal tachycardia is more dangerous. Paroxysmal atrial tachycardia usually does not lead to serious hemodynamic disorders and usually does not require emergency treatment, and if there are no other symptoms, more attention to lifestyle modification is usually sufficient. If paroxysmal atrial tachycardia occurs very frequently, symptomatic antiarrhythmic therapy and, if necessary, radiofrequency ablation are required. Paroxysmal ventricular tachycardia is usually caused by organic heart disease or an obvious cause, and is a serious arrhythmia that needs to be treated within a short period of time, otherwise it may induce serious complications such as shock, ventricular fibrillation, heart failure, etc. Once an attack occurs, cardiac electrical resuscitation therapy is required, as electrical resuscitation therapy is more painful. Patients who feel cardiac discomfort can be immediately admitted to the hospital for 24-hour ECG, cardiac ultrasound and cardiac enzyme examination to clarify the cause and provide timely symptomatic treatment.