Abstract
Based on the ego identity theory, this paper endeavors to analyze how youths live when they meet the crisis in the film Trainspotting. The ego identity theory was first proposed by Erikson and was later developed by Marcia who classified it into four identity statuses. On the basis of Marcia's identity status model, the characters are classified into three types according to their different characters. They are Renton, Renton’s friends and Diane. Those young people idle their time away by taking drugs, having sex and robbing and stealing. They behave like with reasons in themselves and influences from the society. However, they change all the time with some choosing to live with responsibility while others still without responsibility.
By analyzing this special stage that the youths undergo, this paper aims to help the youths deal with the ego identity crisis better and advocate that people in society treat them with more tolerance and understanding.
Keywords   the youth   Trainspotting   the ego identity   identity status model

本文基于自我同一性理论分析了电影《猜火车》中青少年遭遇自我同一性混乱时，表现出的生活状态。自我同一性理论由艾里克斯首次提出，麦卡丽在此基础上将其发展为四种可实验模型。根据不同性格，借助理论模型，本文将电影中的青少年分为三类——瑞登、他的朋友们和黛安。他们吸毒，滥交，抢劫，虚度光阴。种种表现既有他们自身的原因，也有社会的影响。当然，他们在不停地改变，一些开始选择有责任的生活，而另一些依旧选择没有责任的生活。
本文希望通过对自我同一性这一特定阶段的分析和探讨，帮助青少年更好地应对自我同一性危机，同时呼吁人们以平常心看待遭遇自我同一性危机的青年人。
关键词    青少年   《猜火车》   自我同一性   同一性模型

In the film Trainspotting, six young people show their indulgent behavior which are opposite to society common rules. However, it is found that there is a limited literature on these characters from psychological eyes. The purpose of this study is to analyze the process of youths’ change under the guidance of ego identity theory.
A film that shows what makes heroin addictive without glorifying it, Trainspotting was one of the most popular and controversial British films of the 1990s.The film was adapted from Irvine Welsh's novel Trainspotting, and the film ratings prove that it is really successful. The title of the film refers to a hobby of sitting and watching trains pass by and is used as a metaphor for obsessive behavior and wasting time.