本文将对动画片中常见的“四人组”角色设置模型进行研究，通过对具体文本的个案分析进行研究和说明。首先分析动画片“四人组”即主角、女性、助手和小丑的基本组成形态及各个组成人员的性格特征，通过图解的方式说明他们之间可能存在的关系模式及相应关系模式下可能对剧情和主要关系线索的影响。然后以此模型为基准，结合具体文本分析“四人组”模型的变体形式，提出变体产生的原因是“四人组”模型中人物对应的4种功能被拥有不同角色个性强度的人物侵占或分散。第三部分将通过《名侦探柯南》的分析，研究“四人组模型中存在的套层结构。然后讨论“四人组”建组方式的几种形态；“四人组”组成动机与四人组组内地位关系和人员变动对模型结构影响；四人组合的限定方式对组中成员及开放性的影响等相对具体的问题。之后为“四人组”模型的存在提供几种可能的假设性的解释——共构体、接受对象、“公正旁观者”、视觉平衡和儿童群体相似性。最后将针对部分文本中出现的四人组合中在叙事上出现的问题给出合理的解释及可能的解决方法，并指出在当代市场化的语境下，四人组合的设置如何能够提升动画片的娱乐性和可看性。

This paper will study and analyze the model of the “4-persons group” which is often seen in cartoon films. It mainly analyzed the model’s feature, basic form, showed the connection between the parts of the model, summarized the rationality of the formation of the model, and studied the differentiation and combination between the roles of the group. Then select the appropriate way of narrating the story with the roles ’relationship in the specific term which combined the different size of the text, type of narration and the structure. Moreover, this paper will give some specific solutions to the texts which have problems in the narration of the stories when they using the “4-persons group” model. In the third part of the paper, it will analysis the mantle layer structure of the “4-persons group” model based on “Detective Conan”. Then giving some possible explains to the rationality of the exist of the “4-persons group” model, such as accept ion object, “impartial onlooker”, visual balance, similarity of children’s group. Finally, it will point out how the model meets the needs of the story in the commercial text nowadays.