在案件检查中,由于所处的地位不同,调查人员和被调查对象存在着信息不对称的状况。从信息来源看,调查人员的信息来源没有时间和空间的限制,可以随时随地按照规定程序向有关知道案件事实的人员、单位收集证据、获取信息.且这些人员和单位有向纪检监察机关提供真实证据和信息的义务:在被调查对象被采取相关措施后,其信息来源在时空上受到限制,在渠道上更多的是接受调查人员传递的信息。 In the case examination, due to the different status, there is information asymmetry between the investigators and the respondents. From the perspective of sources of information, investigators' sources of information have no time and space constraints, and can collect evidence and obtain information from personnel and units that know the facts of the case anytime, anywhere, in accordance with prescribed procedures, and they provide truth to the discipline inspection and supervision organs Obligations of Evidence and Information: After the respondents took relevant measures, the sources of their information were limited in time and space, and the channels were more likely to receive the information from investigators.