In this paper, we attempt to use the stage development of Beijing opera as the retrospection and prospect. First of all, we discuss the transition of Beijing opera that assimilates languages, operatic tunes, performing forms across different types of operas based on similar Chinese performing arts, and study the art system constructed in the process of its art transformation. Secondly we discuss the influence of the cross-theater form and the change of Beijing opera element that drive qualitative change and connotation of Beijing opera, and the features of Beijing opera affected by the changes in Beijing opera style, aesthetics, technique and skill after crossing theaters under the accumulation of modernization of the stage text, performance, form and style. In addition, The Beijing opera in the 21st century is being performed all over the world. Art is developing to a cross-culturally. We not only perform western works in the form of Beijing opera or have foreigners to enjoy Beijing opera, but also assimilate the conception and view of theaters around the world. How does the cross-cultural creation driven by this stage directly affect and change the cultural phenomenon, awareness and style of Beijing opera? This paper is not intended to explain the development of history, and it expects to observe and study its fusion technique and artistic structure from the 3 developing stages of Beijing opera-"cross-opera", "cross-theater", and "cross-culture", and meanwhile it explains the cross-boundary creation of Beijing opera by individuals, analyzes the cross-cultural change and the updating course of the "cultural thinking", "artistic form", "performance technique" and "style and aesthetics " from the performance experience, gradually attaches more importance to the nature and return of original operas, and suggests the thinking to "opera-based theater" and "prototype-based drama". In this paper, we wish to use the arguments of creating Beijing operas "Trifles" and "Housemaid" to observe and dig the contemporary viewpoint and prototype thinking revealed by Chinese operas so as to provide Taiwan opera in the stage of globalization with a reference of inheritance and development.