在火灾原因调查过程中，不仅要了解火灾现场的情况．获取火灾现场的事实，而且要对这些事实进行综合分析，设立假设，推理验证，最后认定起火原因。因此，火灾调查人员在调查过程中认真做分析研究，对火灾调查工作的成败关系甚大。分析研究要做到论之有理，要求火场勘查人员必 In the investigation of the cause of a fire, it is necessary not only to understand the situation at the scene of the fire. Acquire the facts of the fire scene, and carry out a comprehensive analysis of these facts, establish assumptions, reason and verify, and finally identify the cause of the fire. Therefore, the fire investigators do a lot of research and analysis during the survey process, and they have a lot to do with the success or failure of the fire investigation work. Analytical research needs to be justified and requires that fire site surveyors must