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The in situ Ti _43 Zr _27 Mo _5 Cu _10 Be _15 amorphous composites were investigated for their corrosion properties in solutions of NaCl, HCl, H _2 SO _4 and NaOH. Electrochemical testing, SEM, EDS and XPS analyses revealed that pitting in NaCl and HCl solutions caused local surfaces damage. Amorphous matrix corrodes slightly in H _2 SO _4 solution. Uniform corrosion occurred in NaOH solution without passive film formed, leading to the worst corrosion resistance. The optimal corrosion performances for NaCl and HCl solution are achieved at 0.5 mol l ^−1 and 0.75 mol l ^−1 separately which is related to the shortage of oxygen content in the solutions. While, the best corrosion performances for H _2 SO _4 and NaOH solution are at 0.25 mol l ^−1 . Moreover, the research on the effect of temperature was conducted in 3.5 wt% NaCl solution, it was found that Ti _43 Zr _27 Mo _5 Cu _10 Be _15 amorphous composites exhibited good corrosion resistance at 298 K, while the E _corr declined with increasing solution temperature.