The elderly users of the Tsung-Yeh Arts and Culture Center were selected as the research objects to explore the influencing factors of their health-promoting lifestyle. Results: Under the health promotion lifestyle, nutrition is with the highest relative weight among the main criteria factors; Under the consideration of every main criteria factors, the relative weights of the assessment criteria factors are the highest respectively in positive development, self-relaxation, learning to improve health knowledge, daily physical activity, communication to dispute resolution, and regular dining habits; In the analysis of the overall impact of the assessment criteria factors, the regular eating habits is the most important; The positive development, self-relaxation, learning to improve health knowledge, daily physical activity, communication to dispute resolution, and correct dietary habits are the priority factors to consider respectively toward the other assessment criteria factors in the dimension to which they belong.