AbstractPerovskite oxide thin film materials are used in various fields of human life due to their excellent physical properties. The high performance thin films in turn provide more convenience to human life. How to prepare high‐performance thin films is the most difficult challenge for researchers. There are multiple factors that determine the application area of thin films and influence the performance of thin films. The preparation of the material determines its structure, the structure further influences the material's performance, and the performance decides the material's application, indicating that these four factors are inextricably linked. This article reviews the preparation methods of perovskite oxide films and various factors that affect film properties, as well as basic physical properties. This paper lists the methods to improve the physical properties of thin films and the latest applications in various fields in recent years.