New compositions of Ca-based metallic glasses were studied in aim to reduce their rapid degradation in physiological body fluids. The studies were performed on Ca47Mg18Zn35.5Aux (x = 0,1,3 at.%) samples in the form of plates. The effect of Au addition on the corrosion behavior of new Ca-based alloys in Ringer's solution was reported. It was found that the Ca47Mg18Zn34Au3 and Ca47Mg18Zn34Au1 glasses show more positive corrosion potential than Ca47Mg18Zn35 alloy. Moreover, samples with Au addition Ca47Mg18Zn34Au3 (0.18 ml/cm(2)) and Ca47Mg18Zn34Au1 (1.32 ml/cm(2)) exhibited significantly less hydrogen evolution rates than base alloy Ca47Mg18Zn35 (7.25 ml/cm(2)) after 7 h. The reduced hydrogen volumes of the alloys with Au addition indicated that they can be used for wide range of biomedical applications.