In this study, the effect of the serrate leading edge of the wing used software commercial ANSYS was investigated. An airfoil profile named Ishii airfoil, which has been proven to have optimal aerodynamic quality under low Reynolds conditions, is used in this study to examine the impact of a serrated edge on the wing. A Reynolds averaged Navier-Stokes (RANS) simulation is applied for the simulation. The numerical results are then verified by experimental data at the same conditions. The results show that the accuracy of the numerical simulation at angles of attack below 6 degrees is sufficiently reliable (less than 0.5%). Additionally, the results indicate that the serrated model at the leading edge of the wing helps delay the formation of stall angle. However, in the serrated model, a decrease in aircraft performance is also observed before the stall angle occurs. Detailed pressure fields, lift and drag are presented in this study for different leading-edge configurations.