The present invention relates to self-assembled Janus microparticles and a method for producing the same, wherein the present invention can be used to produce Janus microparticles having a precisely controlled degree of phase separation, and metal selectively on only one surface. An oxide or the like can be coated to realize a stable interfacial orientation, and the present invention can be used to control the degree of phase separation with high precision and has a clear amphipathic anisotropic JANUS MICRO. Since the particles can be mass-produced, the Janus microparticles according to the present invention and the method of manufacturing the same can be widely used in various fields to contribute to industrial development. [Selected figure] Figure 1
