Pulse beats twice and stops once is a manifestation of arrhythmia, commonly seen in premature ventricular beats, premature atrial beats, atrioventricular block and so on, if the attack is frequent, it is necessary to take medication to treat it. 1. Premature ventricular contractions: premature ventricular contractions originate in the ventricle because there is an ectopic pacing point within the ventricle, which sends out impulses in advance. It is necessary to do electrocardiograms and 24-hour ambulatory electrocardiograms to make it clear that, generally speaking, premature ventricular contractions do not have P-waves, and the QRS wave clusters are wide and deformed. If ventricular premature beats occur frequently, medication is needed, such as ginseng pine heart capsule. 2. Atrial premature beats: Normal electrical impulses are emitted from the sinus node of the atrium, while atrial premature beats are impulses emitted from a location other than the sinus node. Atrial premature beats are characterized by anomalous P-waves appearing in advance on the electrocardiogram, and the interval of PR is more than 0.12 seconds, which can be treated by taking stabilizer pellets and metoprolol under the guidance of the doctor. 3. Atrioventricular block: this is due to the heart in the process of electrical excitation conduction, in the process of atrial and ventricular conduction abnormalities, thus causing arrhythmia, need to carry out electrocardiography to clarify the diagnosis, the condition is more serious, can be placed in a pacemaker, such as dual-chamber pacemakers and so on. It is recommended to go to the cardiology department of the hospital to improve the electrocardiogram and 24-hour dynamic electrocardiogram, and follow the doctor’s instructions to standardize the medication, to avoid blind treatment with drugs.