Objective To observe the clinical therapeutic effect of benazepril plus betaloc in the treatment of chronic congestive heart failure(CHF).Methods 42 cases with CHF were treated with benazepril plus betaloc,the therapeutic effect was compared with 40 cases treated with benazepril alone.Before and after treatment,to observe the changes of systolic pressure(SBP),diastolic pressure(DBP),heart rate(HR),left ventricular end systolic diameter(LVESd),left ventricular end diastolic diameter(LVEDd) and left ventricular ejection fraction(LVEF) were observed.Results The general effective rate in treatment group and control group was 95.2% and 80.0%,respectively.The SBP,DBP,HR,LVESd and LVEDd in treatment group decreased obviously(P