The appearance image of fish lamp is designed by geometric section, which simplifies and makes the traditional fish lamp artistic. Combining the traditional fish lamp culture with modern methods and techniques has not only modern experience and beauty, but also the inheritance of traditional culture. The appearance of the fish lamp is designed by using geometrical sections, and the traditional fish lamp is simplified and artistic. Combining the traditional fish lantern culture with modern methods, it has modern experience and beauty without losing the inheritance of traditional culture.