This thesis, mainly focusing on the five original electronic musical works of "Chang Cheng-Ya Works Presentation", discusses the creation idea, the computer technology application, and includes the analysis of those works. The thesis is divided into five chapters: Chapter 1 - Introduction, includes a comprehensive discussion of the development of technology and computer music. Chapter 2 - The compositional idea of the five concert works, includes the background of the composition and the main concept of the employment of electronic technology. Chapter 3 - Electronic music technology, includes the tape technique and synthesis technology. Chapter 4 - Analysis of the role and function of technology, includes the creation of sonic gesture, tone color, space, and new mode of exhibition. Chapter 5 - Conclusion and reflection.