【摘要】 目的 评价葛根素注射液（PI）联合低分子肝素（LMWH）治疗不稳定型心绞痛（UAP）的疗效和安全性。 方法 计算机检索中国生物医学文献数据库（CBM）、中国期刊全文数据库（CNKI）、中文科技期刊全文数据库（VIP-维普）、万方-数字化期刊全文库，纳入在常规治疗上加用PI和LMWH对比单纯常规治疗的随机对照试验（RCT），对纳入研究进行质量评价和Meta分析。 结果 共纳入21个RCT，均为C级文献。Meta分析结果显示，在临床症状疗效显效率、心电图疗效显效率和有效率指标方面，两组差异有统计学意义:RR（95%CI）分别为:1.63（1.48，1.79）、1.57（1.34，1.83）及1.28（1.10，1.49）。 结论 基于上述证据，在常规治疗UAP上加用PI和LMWH疗效优于常规治疗。【Abstract】 Objective To evaluate the effect of the puerarin injection (PI) combined with low molecular weight heparins (LMWH) on unstable angina pectoris (UAP). Methods Randomized controlled trials (RCT) of PI combined with LMWH treating UAP were gathered from CBM, CNKI, VIP, and Wanfang data bases; and study quality was evaluated and the Meta-analysis was carried out. Results A total of 21 RCT were identified, of which all were in graded C. According to Meta-analysis, the differences of the clinic excellent rate, electrocardiogram excellent rate and effective rate between the two groups were significant; the RR (95%CI) were: 1.63 (1.48, 1.79), 1.57 (1.34, 1.83), and 1.28 (1.10, 1.49). Conclusion Based on the evidence recently, PI and LMWH adding is better than ordinary treatment for UAP.