侦查徇私舞弊案的步骤和方法柏三元，张兴祥一、侦查前的准备（一）立案前的审查１、审查原案，查明办案人员对原案的处理是否合法。为此，应着重查明以下五个方面的情况：①原案被告人是否犯罪，是否应当受到刑事追究，该案是经过哪个办案人员之手处理的；②侦查终结、起... Steps and methods of detecting malpractices favoritism Bai Sanyuan and Zhang Xingxiang I. Pre-investigation preparation (I) Review before investigation 1. Review the original case to find out whether the handling of the original case by the investigators is legal or not. Therefore, we should focus on the following five aspects: (1) Whether the defendant in the original case commits a criminal act, whether he should be investigated for criminal responsibility, and which case investigator handled the case;