One of the important laser applications in recent decades is the laser cladding in which the additive powder is molten using the laser and layered on a substrate which solidification gives the proper clad. Such process is involved with heat transfer and phase transformation which creates solidification microstructures. One of the new important and new approaches to sturdy the evolution of such microstructures is the phase field approach which defines a solidification parameter based on which the system energy is defined and then is minimized in time using a kinetic equation which gives the evolution of the microstructures. In the present work, solidification of the molten pool in laser cladding process for Ti is studied using a multiscale modeling. First, the laser scanning on the substrate is simulated and the mass addition is considered such that the predefined microelements of the additive mass are activated along with the laser motion based on a specific pattern. Simultaneously, the shape and geometry of the molten pool and the temperature field are calculated. Next, different types of solidification behaviors such as equiaxed and columnar growths are studied in the microelements inside the solid-melt interface using the phase field method and the coupled system of Cahn-Hilliard and energy is solved using the finite element method in COMSOL. Numerical procedure is verified based on different microstructures and solid-melt interface velocity compared with those of the previous studies. The evolution of equiaxed and columnar microstructures under overcooling is investigated for different sizes of the substrate and the additive mass, laser powers, anisotropy coefficients and different microcell sizes. The results include the predication of molten pool morphology and evolution, solidification microstructure evolution, and temperature distribution. It is found that the solidification rate increases by increasing the substrate size and decreasing the laser power. Also, change in anisotropy coefficient does show a remarkable effect on the microstructure which implies the dominance of undercooling compared to the anisotropy effect. More aver, increasing the sample size changes the solidification regime and decreases the B. Cs effect on the bulk solidification. The results of the simultaneous growth of different regimes also show that the sonification is suppressed in some directions while it is promoted in other directions, i.e., no interference of different regimes occurs. Keywords: Laser cladding, phase field method, molten pool, solidification, anisotropic