The present invention discloses a traditional Chinese drug consisting of Danshen extract and Sanqi extract, the pharmaceutical composition comprising the above traditional Chinese drug as an active component and the use thereof. The traditional Chinese drug consists of Danshen extract and Sanqi extract in a weight ratio of (2˜6):(0.5˜2). The invention further discloses the effect of the above traditional Chinese drug and the pharmaceutical composition comprising the above traditional Chinese drug as an active component for treating cardiac microcirculation disorder and myocardial damage induced by ischemia/reperfusion.