隨著社會型態的改變，飲食已經不再僅是人類為了滿足基本生理需求的例行事物，而是包含更多不同層面的思考，人類開始檢討自己的飲食觀念，藉由更多元的思考途徑來探索飲食現象。本研究藉由多層次因果分析來探討素食的觀點，根據研究分析發現：在表象層，素食則對人的身體健康較為有利；在系統層，以動物本身的立場為考量，為避免動物被殺戮而死亡時感受到痛苦，人類應該要素食；在論述/世界觀層，為了防止全球暖化的觀點也都主張人類應該素食；在迷思和隱喻層，根據生死輪迴的說法，為了避免日後在未來的轉世過程之中，受到動物被人類殺害時相同方式的對待，人類應該要素食。最後，根據研究發現提出結論，提供社會大眾作為飲食選擇之參考。

Along with the change of social patterns, dietary is not only the routine thing which is for satisfying human’s basic physiological requirement any more, it contains more thinking of different levels, human start to review the eating concept of oneself, and to explore diet phenomena by more multiple thinking ways. This study apply causal layered analysis to explore viewpoint of vegetable diet, we found the results according to research analysis: In the litany level, vegetable diet is benefit to human’s health. In the systemic level, to avoid animal’s painful feeling when they are killing to death, human should be vegetarian. In discourse/ world view, in order to prevent global warming, human should be vegetarian. In the myth/metaphor level, according to statement of samsara, to avoid suffering the same treatment which is animals are killed by human, human should be vegetarian. Finally, a conclusion was offered as reference for choosing food of the public according to the study findings.