To observe the effect of salvia miltiorrhiza intravenous preparations on selective PCI perioperative myocardial injury. Methods: To observe the effect of routine treatment combined with salvia miltiorrhiza powder injection, tanshinoneⅡA injection, Danhong injection respectively on serum myocardial markers Myocardial-bound Creatine Kinase(CK-MB) in the serum of patients with unstable Angina(UA) after selective PCI. Then discuss its protective mechanism on perioperative myocardium. Results: Compared with before treatment, the CK-MB level in the routine treatment group had increased with statistically difference(P<0.05). CK-MB level in the salvia miltiorrhiza group also increased with no statistical difference(P>0.05). CK-MB level in Tanshinone group decreased(P=0.053), and that of Danhong group also decreased(P=0.033). Conclusion: Salvia miltiorrhiza intravenous preparation, especially Danhong injection, has certain effect on PCI perioperative myocardial injury.