Abstract: The development process of nuclear technique application in industry may be divided into three stages: early stage——density, thickness and level measurement; middle stage——neutron moisture, ash content and X-ray fluorecence analysis; recent stage——container inspection and industrial CT, nuclear magnetic resonance, neutron capture and non-elastic collision analysis techniques. The development tendency of nuclear instruments applied in industry is: spectrum measurement; detector array and image technique; nuclide analysis and new kinds of nuclear detectors are widely adopted.