Objective To review the curative effect of Naoxintong Capsules on unstable angina.Methods The document of randomized controlled trials(RCT) about treatment of unstable angina with Naoxintong Capsules combining routine Western medicinal or with only routine Western medicinal were retrieved from CNKI,CMFD,CDFD,VIP,WANGFANG,Cochrane Library,and Pubmed database from Jan.1,1993 to Sept.31,2011.All included trials were given quality assessment and material were extracted,which were given Meta analysis by using Revman5.1 software.Results There were ...