“口语词是词汇学理论对词的意义色彩作出的一种分类。这类词语主要运用于非正式的交际场合,具有通俗、随意、亲切、生活化的特点。”口语词汇虽不及书面语规范、科学、艺术,但是它生动活泼、通俗明白、表现力强,能给人留下深刻印象。口语词最初大都来源于人民群众。口语词一般包括惯用语、俗语、顺口溜、格言、谚语等,同时还包括社会流行语(或网络流行语),它们具有形象生动、新鲜活泼的语言特征。在公文写作中合理运用口语词有助于公文文风的改革, “Spoken word is a classification made by lexicology theory on the meaning and color of words, which are mainly used in informal communicative situations and are characterized by popularity, freedom, affection and life.” Although oral vocabulary is inferior to written language Norms, science, art, but it is lively, popular, expressive, can give a deep impression. Oral words initially mostly come from the masses. Oral words generally include idioms, slang, jingle, adage, proverbs and the like, as well as social buzzwords (or online buzzwords) that have vivid, lively language features. The rational use of colloquialisms in official document writing helps to reform the official document style,