BT-1600 image particle analysis system is multi-functional including image distribution test and particle shape analysis. The integration of the traditional microscopy and advanced image processing technology, it consists of optical microscope, CCD camera, image acquisition system, computer, printer, etc. The basic operation is performed by firstly taking the picture of the image in microscope by a special camera, secondly transmit the image obtained to the computer by image acquisition system, thirdly process and analyze the image in special particle size analysis software, finally output the result through monitor and printer. It is characterized by direct-image, direct-view, accuracy, broader range, automatic recognition, statistics and quantification. In addition to examining the shape of the particle, it gives particle size distribution and the ratio of length to diameter (L/D), etc. therefore it becomes a new method for particle size test in scientific research and production field.