调查火灾的起火原因，首先要正确认定起火部位，进而确定起火点。因此，起火部位认定是查明起火点和火灾原因的前提和基础，是整个火灾原因调查过程中非常重要的步骤之一。火灾现场遗留下来的各种痕迹是火灾直接作用的结果，客观地反映了火灾发展的过程。因而，依据火灾现场痕 Investigate the fire cause of the fire, we must first correctly identify the fire site, and then determine the starting point. Therefore, the identification of the fire site is the prerequisite and basis for identifying the cause of the fire and the cause of the fire, which is one of the most important steps in the investigation of the cause of the fire. The traces of the scene left over from the fire are the result of a direct fire and objectively reflect the process of the fire’s development. Thus, based on the fire scene marks