Since the size of the components of the microfluidic chip matches the cells and can simultaneously measure physical quantities, chemical quantities and biomass, it has become the most potential platform for manipulating mammalian cells and their microenvironment. It is now possible to construct micron-scale and relatively closed three-dimensional cell culture, sorting, lysis and other operating units, and successfully extend these units to tissues and organs. Organ-on-a-chip is a model that is closer to a bionic system. It can cultivate various living cells in a chip of several square centimeters to form tissues and organs, and even further compose a living chip from different organ chips to simulate the behavior of a living body and study the living body. relationships between the whole and its parts. In the field of pharmacy, organ chips will be partially replaced by model animals such as mice to verify drug candidates and conduct toxicological and pharmacological studies.