Background At present,there are a large number of randomized controlled trials have shown that exercise can delay the process of atherosclerosis,reduce the incidence of coronary heart disease.But the effect of rehabilitation therapy on the progression of restenoisis after PCI reported less quality,small sample size,test results are not entirely consistent,and the quality have not been systematic reviews.The purpose of this study was to evaluate the efficacy of rehabilitation in preventing restenosis after percutaneous coronary intervention in patients with Coronary Heart Disease,so as to provide guidance for post PCI rehabilitation exercise in patients with coronary heart disease.