According to the principles for collecting material evidence in fire accidents,the paper sums up the requirement for the collection of evidence,analyzes the collection techniques for evidence in forms of solid,liquid and gas,so as to provide scientific material evidence from fire accidents sites and ensure the accuracy and authenticity of the evidence identification.%根据火灾物证提取的原则，总结了火灾物证提取的要求，对固态、液态、气态三种物证提取技术进行了分析论述，以科学提取火灾事故现场的物证，保证物证鉴定分析的准确性和真实性。
展开▼
