Microreactor is an import part of flow chemistry, withfeature sizes between 10 and 300 microns (or 1000 microns) channel fabricated.Due to millions of tens of microchannels, it can achieve high yields with smallsize and less holding capacity. According to its function, we subdivided into micromixer,microreactor, micro tube reactor, micro heat-exchanger, and a microreactorplatform composed of different modules.