When forming a thin film according to the deposition method and the initial deposition condition, the shape of the particle is various deposited. The grain size of thin film is variously grown from several nanometers to several tens of micrometers. The formation temperature of the thin film, the deposition time, the amount of the introduced gas, and the vacuum state of the space in which the thin film is formed can form a shape such as a round shape from the shape of the particle. In this study, we investigated how the grain growth of the thin film was changed by growing zinc oxide on a silicon substrate and a glass substrate after changing the internal environment of the sputter. The grown thin film was observed through an scanning electron microscope. As a result of observing the surface of the thin film through an scanning electron microscope, various shapes such as an angular shape, a circular shape, and a cluster of particles were observed, and the particle size varied from several nanometers to several micrometers. The shape of the cross section of the thin film was observed from the columnar structure to the circular column, and it was confirmed that the initial condition of the thin film affects the shape of the thin film particle, the interface of the thin film, and the shape of the cross section.