聚众斗殴罪脱胎于我国 1979 年《刑法》中的流氓罪，近年来学者们对该罪的理论研究不断深入，但是极少关注聚众斗殴罪的实践考察，多从纯粹的理论视角或者通过个别典型案例分析得出相应的结论。这种缺乏大样本统计分析的研究方式削弱了案例本应有的价值，也使得对聚众斗殴罪的研究不能以确定有效的数据展现出来。为此，本文采用统计分析、案例分析、对比分析的方法对抽样案件进行研究。与通常的实证分析不同，研究更关注对事实细节的把握和分析，通过对案件信息的全面提取，深入研究聚众斗殴案件在司法实践中的疑难问题，并以此为视角探索当下聚众斗殴罪在立法规范以及司法适用中的新思路。全文主要从五个部分进行分析论证： 第一部分是对聚众斗殴的理论见解与实践考察。首先对“聚众”的概念进行理论分析，笔者认为聚众之众只需要满足单方聚集三人以上即可，并且临时纠集、召集的聚众行为也应被认定为本罪。其次对“斗殴”行为进行理论分析，重点分析了在隐蔽的场所实施斗殴行为和单方具有斗殴故意这两个问题。 第二部分是对聚众斗殴转化犯罪的认定与实践考察。全面分析了转化犯的责任主体和无法查明致人重伤或死亡的责任主体时如何处理。笔者认为出现转化定罪情形，对首要分子转化定罪要视情况而定，看其主观是否具有概括性的故意，如果其主观上是概括性的故意，那么需要对重伤、死亡的结果负责。如果存在明确的故意内容，明确反对参与者的过剩行为，那么对首要分子不应转化定罪。对于无法查明直接致害人的情况，对首要分子一律转化定罪。 第三部分是对聚众斗殴中正当防卫的认定。首先对正当防卫的概念进行分析，其次论述了聚众斗殴中能否存在正当防卫。笔者认为，一是不能因行为人具有侵害意思而否认防卫意思的存在，二是在当场斗殴型的场合中，一方是攻击行为，另一方如果在事前无纠集与斗殴故意，那么其反击行为应被认定正当防卫。 第四部分是对聚众斗殴罪与相关犯罪界限的分析。分别从主体、主观方面、客体、客观方面全面分析了其与故意伤害罪、寻衅滋事罪的区分，提炼出此罪与彼罪之间界限区分最为关键的因素。

The crime of agglomeration was born out of the crime of hooliganism in China's 1979 Criminal Law. In recent years，scholars have continued to deepen the theoretical research on this crime，but they rarely pay attention to the practice of gathering people to fight crimes，mostly from a purely theoretical perspective or through individual examples. Case studies draw corresponding conclusions. This lack of large-scale statistical analysis of research methods weakens the value of the case should have，but also makes the study of the crime of gathering crowds can not be determined to determine the effective data. For this reason，this paper uses statistical analysis，case analysis，and comparative analysis methods to study the sampling cases. Different from the usual empirical analysis，the research pays more attention to the grasp and analysis of the details of the facts. Through the comprehensive extraction of case information， it thoroughly studies the difficult issues of the gathering and fighting cases in judicial practice，and explores the current crime of assault by taking it as a perspective. New Ideas in Legislative Norms and Judicial Application. The full text mainly analyzes and demonstrates from five parts: The first part is a review of the theoretical insights and practices of the crowds fighting. First of all，the theoretical analysis of the concept of “combination” was carried out. The author believes that the crowds only need to satisfy unilateral gathering of more than three persons，and that the collective behavior of temporary gathering and convening should also be recognized as the crime. Secondly，it conducts a theoretical analysis of the behavior of “fighting” and focuses on the two issues of carrying out bragging behavior in a hidden place and unilaterally having brawls. The second part is the investigation of the identification and practice of the crime of agglomeration. A comprehensive analysis of how to deal with the subject of responsibility for conversion and the failure to identify the responsible subject that caused serious injury or death. The author believes that the conversion of the conviction， the conversion of the chief element of the conviction depends on the circumstances，depending on whether the subjective intention of a general，if its subjective is a general intention，then you need to be responsible for the results of serious injuries and death. If there is a clear intentional content and a clear opposition to the participant's excess behavior，then the chief element should not be converted. For the situation in which it is impossible to ascertain the direct harm to human beings，all the chief elements are converted into convictions. The third part is the identification of legitimate defense in the crowd fight. First of all，it analyzes the concept of proper defense，and then discusses whether there can be legitimate defense in a crowd fight. The author believes that first，it cannot be denied the existence of defensive intentions because the perpetrator has infringements，and secondly，in the case of a fighting type on the spot，one side is an attacking behavior，and if the other side does not correct and fight intentionally in advance，then its counterattack should be It was determined to be defense. The fourth part is the analysis of the crime of gathering people and fighting crimes. From the subject，subjective aspect，object，and objective aspect，they respectively comprehensively analyzed the distinction between the crime of intentional injury and the crime of causing trouble， and extracted the most crucial factors for distinguishing between this crime and another crime.