Complications arising from transvenous pacemaker placement include: ①, pacemaker malfunction. ②. Infection, commonly at the local puncture or capsular bag incision, and even endocarditis and sepsis in severe cases. ③, muscle twitching of diaphragm, chest wall or abdominal wall, arrhythmia, thrombosis, etc. ④. Perforation of the heart. These complications can lead to pacing failure or make the patient uncomfortable, or even endanger the patient’s life, and need to be dealt with promptly. In this case, the 3/6SM was heard between 3-4 ribs at the left edge of the sternum on the day following the second placement of the temporary pacemaker, probably due to the poor position of the catheter through the tricuspid valve, which caused tricuspid valve closure insufficiency. The ultrasound of the heart showed mild diastolic and tricuspid regurgitation with a regurgitant area of 25*9 mm, no clinical symptoms, no special treatment, and the murmur disappeared after replacement of the buried pacemaker. In recent years, the incidence of viral myocarditis has increased significantly, and complications of severe bradyarrhythmias are not uncommon. Temporary pacemakers are inexpensive, simple to operate, and early and timely placement is undoubtedly the best treatment method to reduce the death rate and increase the cure rate. The indications for buried pacemaker therapy must be strictly controlled in order to avoid unnecessary psychological and economic burden on the patient.