譬喻是文學的開始，也是日常言語行為中重要的修辭技巧。譬喻的取材多樣，來源各有不同，或來自音響耳聞、或來自形神樣貌、或出於匠心獨運，或取自場景、事件。這當中以「譬于事」，通過講述事件構成故事作為比況，更有可觀者，較諸單言片語的比喻較詳實完整、更吸引人注意、也更能引人入勝，增強言語交際的目的。本文以「藉事說理」作為論述譬喻的焦點，以明其表現特色。

Metaphor is the important mean about decorative device of literary writing which studies the using of language. This analysis can help us to understand the logic of the figurative expressions and to clear the special features of metaphor types. Metaphorical usage in human language could no longer be considered as a decorative device of literary writing. They are pervasive in everyday life. This research tries to make analysis through these stories. They are not just representation of the speakers’ thought and action in language. They are thought and action in themselves. This study expects to provide a better reference for ability of talking.