The corrosion characteristics of hull steel DH34 exposed in the Vibrio natriegens culture solution and the sterilized culture solution are studied through scanning electron microscope (SEM) and electrochemical noise analysis (ENA). The pitting of hull steel is developed in Vibrio natrigens solution while the general corrosion is developed in sterilized culture solution. ENA results show that the pitting index values are near to 1 on the first two days in Vibrio natriegens culture solution. The slop of potential noise power density spectrum (PDS) on high frequency scale is higher than -20 dB/dec and the cut-off frequency is higher than 0.2 Hz in Vibrio natrigens culture solution, while the slop is lower than -20 dB/dec and the cut-off frequency is lower than 0.2 Hz in sterilized culture solution. The noise resistance in Vibrio natrigens culture solution is higher than that in sterilized culture solution. The pitting index, PDS slop on high frequency scale and cut-off frequency can be applied to the corrosion behavior analysis induced by Vibrio natriegens.