The Impella is a small heart pump that can be implanted via percutaneous method thus is minimally invasive. The Impella utilizes catheter-based technology to provide hemodynamic support and unload ventricle, currently it is available in Taiwan. The indications of Impella including high-risk PCI and cardiogenic shock especially acute myocardial infarction-related cardiogenic shock. This review provides an overview of Impella technology and development, also summarizes the clinical evidence of the Impella.