Dextrocardia refers to a right-sided location of the heart within the thoracic cavity which is the primary manifesta-tion of the abnormal lateralisation of the embryonic left-right axis.[1]As a rare cardiac malformation,the prevalence rate of dextrocardia is between 1/6000 to 1/35000 live births.[2]It is reported that the incidence rate of coronary artery dis-ease for dextrocardia patients is similar for patients without dextrocardia.However,the detailed information including electrocardiogram(ECG)manifestation and percutaneous coronary intervention(PCI)technique for dextrocardia pa-tients is still limited.[3,4]Herein,we report a dextrocardia patient who was diagnosed by modified ECG and treated by trans-radial PCI facilitated with guiding extension cathe-ter(GEC).