Arrhythmias are clinically known as cardiac arrhythmias. There are many types of arrhythmias, and the determination of whether an arrhythmia is serious depends on the specific type. If the arrhythmia is physiological, it does not require treatment, while if the arrhythmia is caused by other diseases that are more serious, it requires active treatment. 1. Sinus arrhythmia: It is a physiological abnormality that often occurs when exercising, staying up late, or being emotionally excited, etc. This condition does not affect the body too much, and will slowly ease after rest and mood stabilization, and does not require special treatment. 2. Atrial fibrillation: a more common arrhythmia, manifested as a disturbance of the regular and orderly atrial electrical activity, caused by the loss of the normal rhythm of the atria. This arrhythmia will not only affect the patient’s quality of life, but also cause other diseases, so it needs to be treated clinically; 3. Atrial flutter: Atrial flutter is an arrhythmia between atrial tachycardia and atrial fibrillation, when atrial flutter attacks, the patient will experience panic and dizziness, and in severe cases, cardiogenic shock may occur, and this situation should be treated actively with emergency treatment; 4. Paroxysmal supraventricular tachycardia: Tachycardia originating from the atrial or atrioventricular junctional zone, mostly due to folding excitation, i.e., disturbance of the impulse nerve. Patients will show symptoms such as chest tightness, weakness and dizziness, and it is recommended that patients should go to the hospital for timely consultation.