Criminal technology plays a significant role in whole criminal proceedding from investigation to prosecution then to judgement. However, The Criminal technology level among investigation organization、procuratorate and court is out of tune and forms technology gap. It cannot be avoided but can be alleviated. Investigation organization is ahead of Procuratorate and court. The gap is so small that easy to ignore. There is technology gap in personnel cultivating program and continuing education. Not only objective causes such as irreversible technology flow trend、different funcional assignment and deficiency system of lateral communication, but also subjective reason responsible for the criminal technology gap. By utilizing various learning platform、making clear technical idea in court、building lateral communication mechanism and enhancing prople’s consciousness can harmonize the criminal technology gap among three institution.