Procedure of criminal investigation is processes of sequences and steps and procedures which investigator should abide by in the procedure of criminal investigation in order to collect criminal witness and to find out criminal fact.

• 从法律上讲，所谓侦查程序主要是指侦查机构为收集犯罪证据，查明犯罪事实而进行的一系列专门调查过程所遵循的顺序、步骤以及必须履行法律手续的过程。