Percutaneous coronary intervention (PCI) has been increasingly applied as an effective revascularization strategy in patients with coronary artery disease (CAD). However, recent studies had indicated a higher incidence of depression on post-PCI patients. Acupuncture therapy is effective for depression. However, the treatment effect of depression on post-PCI patients is still not clear. Therefore, this systematic review and meta-analysis protocol is planned to evaluate the efficacy and safety of acupuncture for depression in post-PCI patients. Six English databases (PubMed, Web of science, Medline, EMBASE, Springer Cochrane Library and WHO International Clinical Trials Registry Platform) and 4 Chinese databases (Wan fang Database, Chinese Scientific Journal Database, China National Knowledge Infrastructure Database (CNKI) and Chinese Biomedical Literature Database) will be searched normatively according to the rule of each database from the inception to August 1, 2020. Two reviewers will independently conduct article selection, data collection, and risk of bias evaluation. Any disagreement will be resolved by discussion with the third reviewer. Either the fixed-effects or random-effects model will be used for data synthesis based on the heterogeneity test. The change in the scores on the Hamilton depression scale (HAMD) and the Self-rating depression scale (SDS) will be used as the main outcome measure. All-cause mortality, cardiac mortality, Major Adverse Cardiovascular Events (MACEs), rehospitalisation rate and Quality of Life Scale (SF-36) as the secondary outcome. Treatment Emergent Symptom Scale (TESS), General physical examination (temperature, pulse, respiration, blood pressure), Routine examination of blood, urine and stool, Electrocardiogram, Liver and kidney function examination as the security indexs. RevMan5.3.5 will be used for meta-analysis. This study will provide high-quality evidence to assess the efficacy and safety of acupuncture for depression in post-PCI patients. This systematic review will explore whether acupuncture is an effective and safe intervention for depression in post-PCI patients.