As one of the traditional Chinese musical instruments, guzheng has a deep cultural heritage and unique artistic charm. The improvement of guzheng's artistic expression is of great significance to the inheritance and development of guzheng culture. This paper analyses the factors affecting the guzheng's artistic expression from the aspects of players' skill level, emotional commitment, music selection and arrangement, as well as the playing environment, and puts forward corresponding countermeasures to improve the performance. Firstly, to improve the players' professionalism, including skills training and music theory learning. Secondly, to cultivate the players' musical emotion, so as to make the performance more infectious. Thirdly, innovate music arrangement and performance techniques to meet the needs of different audiences. Finally, improve the playing environment and equipment to provide good material conditions for playing. Through empirical analyses, this paper verifies the effectiveness of the proposed countermeasures and provides useful insights for the future enhancement of guzheng's expressive power.