In recent years, Zen aesthetics has often been used in architectural design and interior design. Especially in Japan, Zen Aesthetics has become a fashion style and trend in the house. In order to cope with such fashion trend and make life products harmoniously integrated with the indoor space/environment, the Zen Style have become a major focus in the design of lifestyle products. This study looks at the image of "Zen" through qualitative and quantitative methods and through different thinkings such as perceptual thinking and rational thinking. This study attempts to find out design approaches for the Zen Style and set an exact guideline. In terms of qualitative research, this study analyzes and obtains the core spirit of "Zen" and the directions in questionnaire design through in-depth interviews with experts. In terms of quantitative research, this study uses the method of AHP (Analytic Hierarchy Process) to find the weighted relations between the six major adjectives (including: simple (down-to-earth), elegant (dignified), brief (concise), natural (harmonious), calm (quiet) and soft (pliable)), and the weighted relations between the three Essential Factors in the Zen Form (including the forms, materials and colors). Then, legend elements such as "materials and colors" that have been categorized are used as the reference for design ideas. This study integrates interview conclusions and statistical results to summarize the design priorities of the Zen Style and the design guidelines for this research, so as to conceive product design ideas. This study puts the products through the AHP (Analytic Hierarchy Process) for final selection. During the selection process, the best solution will be selected and the prototype of the product will made as well. Product prototypes will be evaluated by experts to validate the design results of this study. The conclusions of this study mainly include 7 major points: (1) The Essence of Zen. (2) The design implications in the Zen Style. (3) The imagistic idioms in the Zen Style. (4) Evaluation of the importances of the imagistic idioms in the Zen Style. (5) Evaluation of the importances of the three Essential Factors in the Zen Form. (6) Correspondence between imagistic idioms in the Zen Style and three Essential Factors in the Zen Form. (7) Product design in the Zen Style, and discussion and summary based on the three aspects of "quality, quantity and design." In terms of qualitative analysis, this study will explore "the essence of Zen, the design implications in Zen Style, and the imagistic idioms in the Zen Style." In terms of quantitative analysis, this study will conduct the "Analytic Hierarchy Process (AHP) and Statistical Analysis on the legend elements." This study will cross-analyze the two aspects of "quality" and "quantity." Based on the above research results, this study will finally carry out practical verification based on the design of the wooden table and chair, and reach the conclusion on "design" as the third aspect of this study. Therefore, the three major aspects of "quality, quantity and design" are the core focuses of this study to explore "the design in the Zen Style."