Frequent premature beats and missed beats may be related to eating a full meal. If frequent premature beats or missed beats occur only after eating a full meal, it is considered to be caused by a short period of insufficient blood supply to the heart muscle after eating; if frequent premature beats and missed beats occur at other times as well, which is not very related to eating a full meal, further examination should be done to find out the cause. The reason for the occurrence of premature beats after a full meal is that a large amount of food enters the stomach after a meal, and the stomach needs to digest the food, so it needs to speed up the blood circulation, and a large amount of blood enters the gastrointestinal tract, so it is possible that myocardial ischemia occurs, which triggers the heart to have premature beats. If frequent premature beats occur not only after eating a full meal, but also at other times, it is necessary to do some appropriate tests to clarify the cause of the disease. Because many diseases can cause this symptom, such as anemia, thyroid disease, coronary heart disease, rheumatic heart disease, etc., may cause premature arrhythmia, and need to be clearly diagnosed before treatment.