Laser modification of the titanium (Ti) surface is a practical method to improve Ti mechanical properties such as hardness, corrosion resistance as well as wear resistance. Herein, we presented a simple, cost-effective, and green process to generate the ceramic structure of titanium nitride (TiN) on the Ti metal surface. In this research, for the first time, N2 gas was purged in distilled water chamber and was used as an irradiation environment. The effect of various laser scanning cycles on the structure and corrosion resistance of irradiated samples has been investigated. Different analytical methods were applied to study the characteristics of the irradiated Ti samples. The analysis results confirmed the TiN formation in all laser scanning cycles and a small amount of TiO2 at higher laser scanning cycles. In addition, the Ti surface treatment using laser clearly affects the corrosion behavior in Ringer's solution. The obtained TiN layers show lower corrosion current density and higher polarization resistance than bare Ti. Therefore, by laser irradiation of Ti in N2/liquid water environment, the TiN layer is easily formed, presenting desirable surface properties in the corrosion resistance.