调查性新闻,是指通过专门性、系统性的调查活动,揭示某些重要事件或重大问题的内部情况和外部联系,以调查研究的过程和结果为报道内容的一种深度报道形式。调查性新闻报道以调查为主要方式,目的就是要获得一般采访活动所无法获得的更深入、更全面的材料。因此,在调查采访的过程中,要注意搜集和掌握重点性材料。所谓重点性材料,是指在显现事实真相,揭示矛盾症结,反映问题性质等方面有重要 The investigative news refers to revealing the internal situation and external relations of some important events or major issues through specialized and systematic investigation activities in order to investigate the process and result of the research as a kind of in-depth report form of the report content. The main purpose of investigative news reports is to investigate, in order to obtain more in-depth and comprehensive material that general interview activities can not obtain. Therefore, during the survey interview, pay attention to collect and master the key materials. The so-called key materials, refers to the truth in revealing the truth, revealing contradictions, reflecting the nature of the issue is important