发现案件线索是查办违纪案件的前提。纪检监察机关如何主动出击，多渠道、多层次地发现案件线索呢？笔者认为主要有以下途径：一是从信访举报中发现案件线索。纪检监察机关对每一件信访举报都要仔细阅看，认真分析；对每一个举报电话都要认真接听，做好记录；对每一位来访者都 Finding clues to the case is the prerequisite for investigating cases of discipline violation. Discipline inspection and supervision organs how to take the initiative to attack, multi-channel, multi-level discovery of clues to the case? The author believes that there are mainly the following ways: First, find the case clues from the report of petitions. Discipline inspection and supervision of each petition should be carefully read and reported, a careful analysis; for every whistle-blower call must be carefully answered, make a record; for each visitor