任何社会的发展都需要一定的规范，礼在古代作为社会统治秩序的一种准则和规范，涉及到了生活的方方面面，尤其是“国之大事，在祀与戎”的春秋时期，礼在国家祭祀和战争中发挥着举足轻重的作用，正所谓“礼，经国家，定社稷，序民人，利后嗣者也”。本文以《左传》中的战争为范畴，分以下三部分对礼进行初步的探讨和研究：一、《左传》战争中有关礼的内容及分类。此部分主要是对《左传》战争中出现的礼进行文献层面的梳理，以期为接下来的论述奠定文献基础。该项整理以《左传》战争中涉及到的所有的礼为内容，以《周礼•春官•宗伯》中吉礼、凶礼、军礼、宾礼、嘉礼等五礼为分类标准，并增加了《左传》中特有的而“五礼”又不能包含的卜筮礼。二、《左传》战争中的“五礼”及卜筮礼。在文献梳理的基础上对《左传》战争中涉及到的吉礼、凶礼、军礼、宾礼、嘉礼及卜筮礼等进行详细的论述，尤其对其中的军礼做了重点论述，为接下来对《左传》战争中的礼进行初步探索研究做了铺垫。三、《左传》战争中礼的变化。本章重点从“礼崩乐坏”在《左传》战争中的体现和《左传》战争中礼的精神的固守两个方面进行探究，指出春秋时期礼乐的崩坏主要是指制度层面的崩坏，旧礼制崩坏的同时，新的礼制必然应运而生。同时还进一步指出，伴随着礼制的重构，礼的精神和实质仍然为时人所固守。

The development of any society requires a certain norms. In ancient societies, etiquette plays a role of rules and norms for the social dominion order, it involves in all aspects of life, especially in the Spring and Autumn Period, when people focused on "country’s big events are the sacrificing and Military affairs", etiquette plays a decisive role in national ceremonies and Wars, as so-called " etiquette, govern the nation, stabilize public orders, and also benefit offspring.” This paper, based on wars in "ZuoZhuan" , procedures as following three parts for the studying and discussion of etiquette:I. The contents and classification of etiquettes in the wars of "ZuoZhuan". This part mainly summarizes the etiquettes in the wars of "ZuoZhuan" at the level of literature, in order to bulid a literature basis for the following arguments. By listing all etiquettes involved in the wars of "ZuoZhuan", which adopts the classification standards of "Zhou Li-chungong-Zongbo" :Ji Li, Xiong Li, Jun Li, Bin Li, JiaLi, and also the unique Bushi Li in "ZuoZhuan" but is not included in the "Five Etiquettes " .Ⅱ. The "Five Etiquettes " in wars of "ZuoZhuan" and Bushi Li. on the basis of literature summarization, this part provides detailed exposition for Ji Li, Xiong Li, Jun Li, Bin Li, JiaLi, and Bushi Li in "ZuoZhuan" wars, and especially pay attention to the Junli, which paves the way for the following preliminary study of Etiquettes in the war of "ZuoZhuan" .III. The change of Etiquettes in the wars of "ZuoZhuan". This chapter focus on two aspects, the embodiment of "collapsing of Etiquette and music" in in the wars of "ZuoZhuan", and the faith to Etiquette in the wars of "ZuoZhuan", pointing out that the collapsing of Etiquette and music in Spring and Autumn Period mainly refers to the system-level Breakdown, at the same time, the the new Etiquette system will inevitably emerges. Furthermore, the paper points out that people still keep the faith to the spirit and essence of the etiquette in the process of the Etiquette system reconstruction.