Optofluidic technology is a new technology which combines optics and microfluidic technology to achieve cell counting and sorting of some species and other functions on the microchip. Miniaturization, lower prices and more compact structure of flow cytometry have been a trend with the vigorous development of optofluidic technologies in recent years. It brings great convenience to health-care diagnostics, prevention and detection of certain diseases, that will improve the living standards of people. We introduce the lighting and detection optics, novel sorting equipment and other aspects of the latest developments in this field.