对现场外围痕迹物证的研究和分析

Study arid Analysis of the Trace and Material Evidence of the Scene Periphery

现场外围经常出现痕迹物证，对这些物证的种类、形成因素与犯罪关系进行研究和分析，可以用来证实和揭露犯罪。通过对外围现场认真的勘查，既可以分析犯罪心理状态，判断罪犯的惯、偶性，又可以确定作案人数，推断罪犯的职业特点；既可以判明罪犯进入现场的路线，又可以识别罪犯逃跑的方向。这样就能够全面地为侦查提供线索，为破案提供证据。

The study and analysis of the type, forming elements and relations with the crime of the material evidence around the crime scene periphery can be used to prove and reveal the crime. Through careful investigation of the scene periphery, we can not only analyze the criminals' psychology, judge the offence as habitual or casual, but also determine the number of the criminals, infer the characteristics of the criminals, identify the mute they entered and the direction they fled. Providing clue for the investigation and proof for solving the case.