The computational flow numerical analysis was introduced to predict thc turbulent characteristics in the mixing flow structure of $45^{circ}$ impinging round jet. This analysis has been carried out through the commercial fluent software. Realizable(RLZ) k-${varepsilon}$ was used as a turbulent model. It can be known that mean velocities analysed through RLZ k-${varepsilon}$ turbulent model comparatively predict well the experiments and show well the elliptic shape of mixing flow structure in the Y-Z plane, but analysed turbulent kinetic energies show somewhat differently from the experiments in certain regions.