物证鉴定,与其他各种司法鉴定一样是司法机关委托具有相应鉴定能力的单位和鉴定人进行的与诉讼活动有关的鉴定活动,其鉴定成果有相应的法律效力,是一种法定证据。司法鉴定具有特殊的社会功能,是各种诉讼活动不可缺少的组成部分。物证鉴定活动系指其全部工作环节,包括围绕这些环节开展的实验、调查和评价等工作。从工作程序上看,它包括鉴定的委托、受理、检验和评断等内容;从评断的性质和层次上看,它包括物证鉴定(出具鉴定书)、物证检验(出具检验报告)和技术分析(出具分析意见)等;从对鉴定客体处理的环节上看,它包括样本的采集、送达、实验、传递(当需要做两种或两种以上实验时)、封存、移送(至审判机关)和销毁等。物证鉴定活动是一项庞杂的系统工程,有着独特的内在运行规 Identification of physical evidence, like other judicial appraisals, is the appraisal activity related to litigation activities commissioned by the judiciary with the corresponding appraisal ability units and appraisers. The appraisal result has the corresponding legal effect and is a kind of statutory evidence. Forensic identification has special social functions and is an integral part of various litigation activities. Physical evidence accreditation activities refer to all the work processes, including experiments, surveys and evaluations around these links. From the perspective of the work procedure, it includes the contents of commission, acceptance, inspection and judgment of identification. From the nature and level of judgment, it includes identification of physical evidence (issued a certificate of identification), material evidence verification (issued inspection report) and technical analysis From the point of view of the identification of object processing, which includes the sample collection, delivery, experiment, transmission (when need to do two or more experiments), storage, transfer (to the trial authority) And destroyed. Physical evidence accreditation activity is a complex system engineering, has a unique internal operation rules