To achieve good internal quality control in a food microbiology laboratory,the contents and modes of internal technical verifications and the methods to implement were summed up and discussed.The discussion was made in terms of five aspects,i.e.personnel,equipment and environment,verification of strain and culture medium,confirmation of methods and process control.The modes and technical basis for performing technical verifications of elements in a food microbiology laboratory were presented.Internal technical verification is an important integral part of quality assurance for a laboratory and should be performed regularly in a planned way.