Percutaneous coronary intervention (PCI) has been widely used in the treatment of coronary heart disease. However, restenosis and re-occurrence of myocardial ischemia after PCI may influence its long-term outcomes. Effective rehabilitation exercise training could improve the patients' quality of life, increase the blood supply of ischemic myocardium and slow down the progress of coronary atherosclerosis after the PCI. This paper reviews the mechanisms of rehabilitation and program of exercise therapy after PCI.