Abstract The temperature effect on the corrosion behavior of copper that was inhibited by 3,4'-bi-1,2,4-Triazole in NaCl 3% Medium was investigated using potentiodynamic polarization techniques. Inhibition effect was found to increase with decreasing the temperature. Polarization curves showed that 3,4'-bi-1,2,4-Triazole (bTA) act as mixed type inhibitors in 3% NaCl Medium. The obtained results showed that the 3,4'-bi-1,2,4-Triazole could serve as an effective inhibitor of the copper corrosion in 3% NaCl Medium at various temperature up to 55°C.  Keywords: copper, neutral salt-spray corrosion; electrochemical corrosion; corrosion behavior; corrosion resistance, 1,2,4-Triazole.