“吹牛皮”和“拍马屁”何以有吹嘘、奉承之义,众说纷纭,莫衷一是。本文评析众说,探源溯流,用词汇生动化理论揭开了这两个俗语词的谜底。文章认为“吹”很早就有吹嘘义,“拍”很早就有奉承义,“吹牛皮”拍马屁“是”吹“”拍“二词的生动化形式。 ”Blowing leather “ and ”flattering “ Why boast, the meaning of flattery, divergent views, incomprehensible. This article analyzes the public said that the source, the word vivid theory opened the mystery of these two idioms. The article holds that ”blowing“ has long been a boast of righteousness, and ”making“ has a long history of flattery. ”Blowing leather“ flattering ”is the vivid expression of“ blowing ”and“ making ” Form.