Thin Solid films are usually thermodynamically unstable in the as-deposited state. Heating can lead to fragmentation (or pinch-off) of a thin film and the formation of micro-/nano- solid particles. This process is well-known as solid-state dewetting in materials science, and it is often driven by the minimization of the total interfacial energy of the system. In this talk, we propose a phase field approach for simulating solid-state dewetting and the morphological evolution of patterned islands on a substrate. The evolution is governed by the Cahn–Hilliard equation with degenerate mobilities coupled with contact line boundary conditions. The proposed approach can include the surface energy anisotropy into the models. Several important features observed in experiments can be reproduced by numerically solving the proposed models.