Introduction: Atrial tachycardia(AT) occurring from the right atrial appendage(RAA) is relatively uncommon, while the catheter ablation is complicated by the anatomic characteristics. Methods: We reported a case of 60-year-old male patient who was admitted with incessant AT. Results: The tachycardia activation mapping demonstrated that the AT originated from the tip of RAA. Pulsed field ablation(PFA) using the circular mapping&PFA catheter terminated AT without any complication. Conclusions: This case corroborates that PFA might be an alternative strategy for ablation of atrial arrhythmia originating from the atrial appendage.