To explore effect of Danshen injections on patients with hypertension and left ventricular failure in order to provide clinical guidance. Methods: Fifty-two patients were randomly divided into two groups: 22 patients in control group received the conventional treatment， 30 patients in observation group received Danshen injection in addition. We compared LVEDD， LVESD， LVEF， LVMW， △T% change between 2 groups， and compared t cardiac function improvement rate; analyzed serum lipids and glucose. Results: The observation group had total effective rate of 93.34%， compared to 77.27% in the control group (χ2=10.039，P<0.05); After treatment it was observed in both groups that LVEDD and LVESD reduced， LVMW relieved， LVEF and △T rose; and the observation group improved more significantly than the control group (P<0.05). Conclusion: Danshen injections can protect myocardial cells， and improve the cardiac function in patients with heart failure.