药家鑫故意杀人案是2010年底到2011年初的舆论焦点，在是否构成激情杀人、是否适用死刑立即执行、民意是否影响了判决这三点上引发了激烈的讨论。本文将从这三大方面进行论述，对药家鑫故意杀人案进行深度的法理分析。本文分为三大部分。第一大部分主要论述激情犯罪的问题。第一部分分为四个小节，第一小节论述了刑法学范畴里激情犯罪的概念，明确本文是在刑法学范畴的激情犯罪语境下来分析药家鑫案是否存在激情杀人的情节；第二小节分析了激情犯罪的主要特征，包括爆发性、特定性、情绪性和暴力性；第三小节分析了激情犯罪的认定标准，主要包括客观要素、主观要素、时间要素和对象要素；第四小节将药家鑫案与前向三小节的论述相结合，分析得出药家鑫案不存在激情杀人的情节。第二部分主要论述了死刑适用问题。药家鑫案事实清楚，在认定成立故意杀人罪上没有疑问，但在是否适用死刑立即执行上引发了舆论的广泛关注。在这部分，本文从“故意杀人罪的死刑适用”、“对罪行极其严重”的解读、对“应当判处死刑”的解读以及对“不是必须立即执行”的理解这三方面研究药家鑫是否适用“不是必须立即执行”，最后在结合药家鑫自首等量刑情节得出笔者的观点。笔者认为药家鑫案可以适用“不是必须立即执行”。第三部分主要是论述民意与刑事司法的相关问题。在第一小节中论述分析了民意的概念以及刑事司法领域民意的特点。第二小节提出了避免民意对刑事司法不当影响的若干建议。第三小节，结合药家鑫案分析了民意对案件的影响。

Yaojiaxin’s Intentional Homicide Case is the focus on public opinion in the end of 2010 to early 2011.There are arguments about passion killings,application of death penalty and public opinion.This thesis will discuss these three aspects to make a legality analysis of Yaojiaxin’s Intentional Homicide Case.This thesis is divided into three aspects.The first aspect discuss the problem of passion killings.The first aspect is divided into four sections.The first section discuss the concept of passion crime in the criminal law category and find out whether there is passion killing in the Yaojiaxin’s case.The second section analyze the main features of passion crime,including explosive,specificity,emotional and violent.The third section analyze the standards of passion crime,including objective elements,subjective elements,time elements and object elements.The fourth section combine the Yaojiaxin’s case to the discussion about the previous three sections and find out that there is no passion killing in the Yaojiaxin’s case.The second aspect discuss the problems of the application of death penalty.The facts are clear about the Yaojiaxin’s case,there is no doubt about accounting the intentional homicide to Yaojiaxin.But there are many discussions about the death penalty immediately.This aspect is divided into four sections.The first section discuss the application of death penalty about the intentional homicide.The second section discuss the conspect of commit the most heinous.The third section discuss the conspect of not be executed immediately.The fourth section combian the Yaojiaxin’s case to the discussion about the previous three sections and find out the conclusion.Yaojiaxin has a surrendered in his intentional homicide case and other situations which shuold be considered about conviction.The author think that Yaojiaxin could not be executed immediately.The third aspect discuss the problems of public and criminal justice.This aspect is divided into three sections.The fist section discuss the conspect of the public opinion and the conspect of the public opinion in criminal justic category. The second section make some suggestions about how to avoid the public opinion’s harmal affect in criminal justice category.The third section combian the Yaojiaxin’s case to the study about pubilc opinion and find out the public opinion’s affect about the Yaojiaxin’s case.