Our work was to develop new inhibiting formulations that meet the efficient, cost-effective and consistent with the restrictive environmental regulations. In this work, we studied the inhibition of corrosion of mild steel in 200 ppm NaCl by the addition of a sugar-based polymer. This study was carried out by various electrochemical, spectroscopic and surface analysis techniques. The results obtained show that this compound exhibits a better inhibitory efficiency which reaches 91% to 80 ppm and is dependent on the concentration, the temperature and the immersion time. The SEM-EDX analysis shows that the compound adsorbs to the metal surface.